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Huma - PR 124 - Huma Finance

Prepared by:

HALBORN

Last Updated 04/01/2025

Date of Engagement: December 27th, 2024 - January 2nd, 2025

Summary

100% of all REPORTED Findings have been addressed

All findings

Critical

High

Medium

Low

Informational

1. Introduction
2. Assessment summary
3. Test approach and methodology
4. Risk methodology
5. Scope
6. Assessment summary & findings overview
7. Findings & Tech Details

7.1 Lack of proper validation in deposit
7.2 Incomplete new owner validation in the transfer ownership process
7.3 Lack of pool name length validation
7.4 Possibility to close started credit with commitment
7.5 Receivable can be approved by different pool
7.6 Lack of currency code length validation
7.7 Reallocating pools with new format will lead to data inconsistency
7.8 Lack of ea and pool owner treasury validation in pool creation
7.9 Lack of delegated amount validation in add redemption requests for premature deposits
7.10 Possibility of inconsistent late payment fees
7.11 Lack of validation for extensions of the mint
7.12 Reliance on manual process
7.13 Potential denial of service if pools using non-reallocated poolconfig with the old format
7.14 Lack of validation for the minimum borrow amount to exceed the fees
7.15 Potential complete profit capture via admin fees
7.16 Money movement when protocol is paused in some instructions
7.17 Ea and pool owner treasury will also need to approve delegate if they want to call deposit
7.18 Lack of delegate validation in make payment
7.19 Passing superfluous system program account
7.20 Inconsistencies in documentation

8. Automated Testing

1. Introduction

Huma engaged Halborn to conduct a security assessment of the Huma Protocol Solana program from September 9th, 2024, to January 2nd, 2025. Huma Protocol is an on-chain PayFi protocol that provides liquidity to payments financing use cases with an initial focus on business borrowers. It takes a modular approach to support diverse needs of Structured Finance. The protocol can be extended by adding additional modules to key functions such as tranche policies, fee managers, due managers, and calendar.

In December, Huma introduced three incremental features to the protocol:

Monthly interest withdrawals for lenders (LPs)
Ability for the pool owner to make payments on behalf of borrowers
A system account (Sentinel) to automatically trigger redemption requests

Halborn then performed an incremental audit of these new features to ensure the continued security and reliability of the protocol.

2. Assessment Summary

Halborn was provided 3.5 weeks for the initial engagement and 6 and 4 days for the additional scope assessments, and assigned two full-time security engineer/s to review the security of the Solana Programs in scope. The engineers are blockchain and smart contract security experts with advanced smart contract hacking skills, and deep knowledge of multiple blockchain protocols.

The purpose of the assessment is to:

Identify potential security issues within the Solana Programs.
Ensure that smart contract functionality operates as intended.

In summary, Halborn identified some security concerns. The main ones were the following:

Lack of proper validation in Deposit
Incomplete new owner validation in Transfer Ownership process
Possibility to close started Credit with commitment
Lack of pool name length validation
Lack of pool currency code length validation
Receivable can be approved by different pool
Reallocating pools with new format will lead to data inconsistency

Most of the findings were addressed, and the corresponding fixes have been merged into the branches listed below. The final commits reflect the changes that solved the issues:

80799a02665dab07f695e8c9aee03f50b99af26f on develop branch
5da8c0ac3b6899557ba185379bf4eaa8aa9efe17 on main

3. Test Approach and Methodology

Halborn performed a combination of a manual review of the source code and automated security testing to balance efficiency, timeliness, practicality, and accuracy in regard to the scope of the program assessment. While manual testing is recommended to uncover flaws in business logic, processes, and implementation; automated testing techniques help enhance coverage of programs and can quickly identify items that do not follow security best practices.

The following phases and associated tools were used throughout the term of the assessment:

Research into the architecture, purpose, and use of the platform.
Manual program source code review to identify business logic issues.
Mapping out possible attack vectors
Thorough assessment of safety and usage of critical Rust variables and functions in scope that could lead to arithmetic vulnerabilities.
Scanning dependencies for known vulnerabilities (
```
cargo audit
```
).
Local runtime testing (
```
anchor-test
```
)

4. RISK METHODOLOGY

Every vulnerability and issue observed by Halborn is ranked based on two sets of Metrics and a Severity Coefficient. This system is inspired by the industry standard Common Vulnerability Scoring System.

The two Metric sets are: Exploitability and Impact. Exploitability captures the ease and technical means by which vulnerabilities can be exploited and Impact describes the consequences of a successful exploit.

The Severity Coefficients is designed to further refine the accuracy of the ranking with two factors: Reversibility and Scope. These capture the impact of the vulnerability on the environment as well as the number of users and smart contracts affected.

The final score is a value between 0-10 rounded up to 1 decimal place and 10 corresponding to the highest security risk. This provides an objective and accurate rating of the severity of security vulnerabilities in smart contracts.

The system is designed to assist in identifying and prioritizing vulnerabilities based on their level of risk to address the most critical issues in a timely manner.

4.1 EXPLOITABILITY

Attack Origin (AO):

Captures whether the attack requires compromising a specific account.

Attack Cost (AC):

Captures the cost of exploiting the vulnerability incurred by the attacker relative to sending a single transaction on the relevant blockchain. Includes but is not limited to financial and computational cost.

Attack Complexity (AX):

Describes the conditions beyond the attacker’s control that must exist in order to exploit the vulnerability. Includes but is not limited to macro situation, available third-party liquidity and regulatory challenges.

Metrics:

EXPLOITABILITY METRIC ( $m_e$ )	METRIC VALUE	NUMERICAL VALUE
Attack Origin (AO)	Arbitrary (AO:A) Specific (AO:S)	1 0.2
Attack Cost (AC)	Low (AC:L) Medium (AC:M) High (AC:H)	1 0.67 0.33
Attack Complexity (AX)	Low (AX:L) Medium (AX:M) High (AX:H)	1 0.67 0.33

Exploitability

E

is calculated using the following formula:

$E = \prod m_e$

4.2 IMPACT

Confidentiality (C):

Measures the impact to the confidentiality of the information resources managed by the contract due to a successfully exploited vulnerability. Confidentiality refers to limiting access to authorized users only.

Integrity (I):

Measures the impact to integrity of a successfully exploited vulnerability. Integrity refers to the trustworthiness and veracity of data stored and/or processed on-chain. Integrity impact directly affecting Deposit or Yield records is excluded.

Availability (A):

Measures the impact to the availability of the impacted component resulting from a successfully exploited vulnerability. This metric refers to smart contract features and functionality, not state. Availability impact directly affecting Deposit or Yield is excluded.

Deposit (D):

Measures the impact to the deposits made to the contract by either users or owners.

Yield (Y):

Measures the impact to the yield generated by the contract for either users or owners.

Metrics:

IMPACT METRIC ( $m_I$ )	METRIC VALUE	NUMERICAL VALUE
Confidentiality (C)	None (C:N) Low (C:L) Medium (C:M) High (C:H) Critical (C:C)	0 0.25 0.5 0.75 1
Integrity (I)	None (I:N) Low (I:L) Medium (I:M) High (I:H) Critical (I:C)	0 0.25 0.5 0.75 1
Availability (A)	None (A:N) Low (A:L) Medium (A:M) High (A:H) Critical (A:C)	0 0.25 0.5 0.75 1
Deposit (D)	None (D:N) Low (D:L) Medium (D:M) High (D:H) Critical (D:C)	0 0.25 0.5 0.75 1
Yield (Y)	None (Y:N) Low (Y:L) Medium (Y:M) High (Y:H) Critical (Y:C)	0 0.25 0.5 0.75 1

Impact

I

is calculated using the following formula:

$I = max(m_I) + \frac{\sum{m_I} - max(m_I)}{4}$

4.3 SEVERITY COEFFICIENT

Reversibility (R):

Describes the share of the exploited vulnerability effects that can be reversed. For upgradeable contracts, assume the contract private key is available.

Scope (S):

Captures whether a vulnerability in one vulnerable contract impacts resources in other contracts.

Metrics:

SEVERITY COEFFICIENT ( $C$ )	COEFFICIENT VALUE	NUMERICAL VALUE
Reversibility ( $r$ )	None (R:N) Partial (R:P) Full (R:F)	1 0.5 0.25
Scope ( $s$ )	Changed (S:C) Unchanged (S:U)	1.25 1

Severity Coefficient

C

is obtained by the following product:

$C = rs$

The Vulnerability Severity Score

S

is obtained by:

$S = min(10, EIC * 10)$

The score is rounded up to 1 decimal places.

Severity	Score Value Range
Critical	9 - 10
High	7 - 8.9
Medium	4.5 - 6.9
Low	2 - 4.4
Informational	0 - 1.9

5. SCOPE

REPOSITORIES

(a) Repository: huma-solana-programs

(b) Assessed Commit ID: 7d84086

00labs/huma-solana-programs/blob/audit/Anchor.toml
00labs/huma-solana-programs/blob/audit/Cargo.lock
00labs/huma-solana-programs/blob/audit/Cargo.toml
00labs/huma-solana-programs/blob/audit/programs/huma/Cargo.toml
00labs/huma-solana-programs/blob/audit/programs/huma/Xargo.toml
00labs/huma-solana-programs/blob/audit/programs/huma/src/common/calendar.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/common/calendar/tests.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/common/constants.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/common/errors.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/common/huma_config/instructions/create_huma_config.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/common/huma_config/instructions/liquidity_asset.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/common/huma_config/instructions/mod.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/common/huma_config/instructions/pause.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/common/huma_config/instructions/update_huma_config.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/common/huma_config/mod.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/common/huma_config/states.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/common/mod.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/common/preconditions.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/common/utils.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/credit.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/due_manager.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/due_manager/tests.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/events.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/approve_credit.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/approve_receivable.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/close_credit.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/create_receivable.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/declare_payment.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/drawdown.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/make_payment.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/make_principal_payment.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/manage_credit.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/manage_credit_config.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/mod.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/refresh_credit.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/start_committed_credit.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/submit_receivable.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/update_receivable.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/mod.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/states.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/test_utils.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/lib.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/epoch_manager.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/admin_fees.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/close_epoch.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/close_pool.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/create_pool.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/create_pool_accounts.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/disable_pool.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/enable_pool.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/mock_pnl.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/mod.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/pool_operator.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/update_pool_config.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/mod.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/pnl.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/pool.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/states.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/tranches_policy.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/tranches_policy/fixed_senior_yield_tranches_policy.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/tranches_policy/risk_adjusted_tranches_policy.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/add_redemption_request.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/cancel_redemption_request.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/close_lender_accounts.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/create_lender_accounts.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/deposit.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/disburse.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/make_initial_deposit.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/manage_lender.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/mod.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/transfer_hook.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/update_to_latest_redemption_record.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/withdraw_after_pool_closure.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/mod.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/states.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/tranche_vault.rs
00labs/huma-solana-programs/blob/audit/programs/tranche-token-hook/Cargo.toml
00labs/huma-solana-programs/blob/audit/programs/tranche-token-hook/src/constants.rs
00labs/huma-solana-programs/blob/audit/programs/tranche-token-hook/src/errors.rs
00labs/huma-solana-programs/blob/audit/programs/tranche-token-hook/src/instructions/mod.rs
00labs/huma-solana-programs/blob/audit/programs/tranche-token-hook/src/instructions/transfer.rs
00labs/huma-solana-programs/blob/audit/programs/tranche-token-hook/src/lib.rs

00labs/huma-solana-programs/blob/audit/Anchor.toml
00labs/huma-solana-programs/blob/audit/Cargo.lock
00labs/huma-solana-programs/blob/audit/Cargo.toml

↓ Expand ↓

Out-of-Scope: 00labs/huma-solana-programs/blob/audit/yarn.lock, 00labs/huma-solana-programs/blob/audit/Anchor.toml, 00labs/huma-solana-programs/blob/audit/Cargo.lock, 00labs/huma-solana-programs/blob/audit/Cargo.toml, 00labs/huma-solana-programs/blob/audit/programs/huma/Cargo.toml, 00labs/huma-solana-programs/blob/audit/programs/huma/Xargo.toml, 00labs/huma-solana-programs/blob/audit/programs/huma/src/common/calendar.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/common/calendar/tests.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/common/constants.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/common/errors.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/common/huma_config/instructions/create_huma_config.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/common/huma_config/instructions/liquidity_asset.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/common/huma_config/instructions/mod.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/common/huma_config/instructions/pause.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/common/huma_config/instructions/update_huma_config.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/common/huma_config/mod.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/common/huma_config/states.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/common/mod.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/common/preconditions.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/common/utils.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/credit.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/due_manager.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/due_manager/tests.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/events.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/approve_credit.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/approve_receivable.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/close_credit.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/create_receivable.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/declare_payment.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/drawdown.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/make_payment.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/make_principal_payment.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/manage_credit.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/manage_credit_config.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/mod.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/refresh_credit.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/start_committed_credit.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/submit_receivable.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/update_receivable.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/mod.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/states.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/test_utils.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/lib.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/epoch_manager.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/admin_fees.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/close_epoch.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/close_pool.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/create_pool.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/create_pool_accounts.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/disable_pool.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/enable_pool.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/mock_pnl.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/mod.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/pool_operator.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/update_pool_config.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/mod.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/pnl.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/pool.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/states.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/tranches_policy.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/tranches_policy/fixed_senior_yield_tranches_policy.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/tranches_policy/risk_adjusted_tranches_policy.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/add_redemption_request.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/cancel_redemption_request.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/close_lender_accounts.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/create_lender_accounts.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/deposit.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/disburse.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/make_initial_deposit.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/manage_lender.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/mod.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/transfer_hook.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/update_to_latest_redemption_record.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/withdraw_after_pool_closure.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/mod.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/states.rs, 00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/tranche_vault.rs, 00labs/huma-solana-programs/blob/audit/programs/tranche-token-hook/Cargo.toml, 00labs/huma-solana-programs/blob/audit/programs/tranche-token-hook/src/constants.rs, 00labs/huma-solana-programs/blob/audit/programs/tranche-token-hook/src/errors.rs, 00labs/huma-solana-programs/blob/audit/programs/tranche-token-hook/src/instructions/mod.rs, 00labs/huma-solana-programs/blob/audit/programs/tranche-token-hook/src/instructions/transfer.rs, 00labs/huma-solana-programs/blob/audit/programs/tranche-token-hook/src/lib.rs

(a) Repository: huma-solana-programs

(b) Assessed Commit ID: https://github.com/00labs/huma-solana-programs/pull/113

huma/src/pool/instructions/update_pool_config.rs
huma/src/pool/states.rs
huma/src/tranche_vault/instructions/add_redemption_request.rs

↓ Expand ↓

Out-of-Scope: huma/src/common/calendar/*, huma/src/common/calendar.rs, huma/src/common/constants.rs, huma/src/common/errors.rs, huma/src/common/mod.rs, huma/src/common/preconditions.rs, huma/src/common/utils.rs, huma/src/common/huma_config/instructions/*, huma/src/common/huma_config/mod.rs, huma/src/common/huma_config/states.rs, huma/src/credit/*, huma/src/pool/epoch_manager.rs, huma/src/pool/mod.rs, huma/src/pool/pnl.rs, huma/src/pool/pool.rs, huma/src/pool/tranches_policy/*, huma/src/pool/tranches_policy.rs, huma/src/pool/instructions/admin_fees.rs, huma/src/pool/instructions/close_epoch.rs, huma/src/pool/instructions/close_pool.rs, huma/src/pool/instructions/create_pool.rs, huma/src/pool/instructions/create_pool_accounts.rs, huma/src/pool/instructions/disable_pool.rs, huma/src/pool/instructions/enable_pool.rs, huma/src/pool/instructions/mock_pnl.rs, huma/src/pool/instructions/mod.rs, huma/src/pool/instructions/pool_operator.rs, huma/src/tranche-vault/mod.rs, huma/src/tranche-vault/states.rs, huma/src/tranche-vault/tranche_vault.rs, huma/src/tranche-vault/instructions/, huma/src/tranche_vault/instructions/close_lender_accounts.rs, huma/src/tranche_vault/instructions/create_lender_accounts.rs, huma/src/tranche_vault/instructions/disburse.rs, huma/src/tranche_vault/instructions/make_initial_deposit.rs, huma/src/tranche_vault/instructions/manage_lender.rs, huma/src/tranche_vault/instructions/mod.rs, huma/src/tranche_vault/instructions/update_to_latest_redemption_record.rs, huma/src/tranche_vault/instructions/withdraw_after_pool_closure.rs, tranche-token-hook/src/constants.rs, tranche-token-hook/src/errors.rs, tranche-token-hook/src/lib.rs, tranche-token-hook/src/instructions/mod.rs, third party dependencies and economic attacks.

(a) Repository: huma-solana-programs

(b) Assessed Commit ID: https://github.com/00labs/huma-solana-programs/pull/118

programs/huma/src/common/constants.rs
programs/huma/src/lib.rs
programs/huma/src/tranche_vault/instructions/manage_lender.rs

↓ Expand ↓

Out-of-Scope: Everything that was not changed within this PR, third party dependencies and economic attacks.

(a) Repository: huma-solana-programs

(b) Assessed Commit ID: https://github.com/00labs/huma-solana-programs/pull/120

programs/huma/src/common/errors.rs
programs/huma/src/common/preconditions.rs
programs/huma/src/lib.rs

↓ Expand ↓

Out-of-Scope: Everything that was not changed within this PR, third party dependencies and economic attacks.

(a) Repository: huma-solana-programs

(b) Assessed Commit ID: https://github.com/00labs/huma-solana-programs/pull/119

programs/huma/src/pool/epoch_manager.rs

Out-of-Scope: Everything that was not changed within this PR, third party dependencies and economic attacks.

(a) Repository: huma-solana-programs

(b) Assessed Commit ID: https://github.com/00labs/huma-solana-programs/pull/123

programs/huma/src/tranche_vault/instructions/withdraw_yields.rs

Out-of-Scope: Everything that was not changed within this PR, third party dependencies and economic attacks.

(a) Repository: huma-solana-programs

(b) Assessed Commit ID: https://github.com/00labs/huma-solana-programs/pull/124

programs/huma/src/credit/credit.rs
programs/huma/src/credit/instructions/make_payment.rs
programs/huma/src/credit/instructions/make_payment_on_behalf_of.rs

↓ Expand ↓

Out-of-Scope: Everything that was not changed within this PR, third party dependencies and economic attacks.

Out-of-Scope: New features/implementations after the remediation commit IDs.

6. Assessment Summary & Findings Overview

Critical

High

Medium

Low

Informational

Security analysis	Risk level	Remediation Date
LACK OF PROPER VALIDATION IN DEPOSIT	Low	Solved - 09/25/2024
INCOMPLETE NEW OWNER VALIDATION IN THE TRANSFER OWNERSHIP PROCESS	Low	Risk Accepted
LACK OF POOL NAME LENGTH VALIDATION	Low	Solved - 09/25/2024
POSSIBILITY TO CLOSE STARTED CREDIT WITH COMMITMENT	Low	Solved - 09/28/2024
RECEIVABLE CAN BE APPROVED BY DIFFERENT POOL	Low	Solved - 09/25/2024
LACK OF CURRENCY CODE LENGTH VALIDATION	Low	Solved - 09/25/2024
REALLOCATING POOLS WITH NEW FORMAT WILL LEAD TO DATA INCONSISTENCY	Low	Solved - 12/02/2024
LACK OF EA AND POOL OWNER TREASURY VALIDATION IN POOL CREATION	Informational	Acknowledged
LACK OF DELEGATED AMOUNT VALIDATION IN ADD REDEMPTION REQUESTS FOR PREMATURE DEPOSITS	Informational	Solved - 12/01/2024
POSSIBILITY OF INCONSISTENT LATE PAYMENT FEES	Informational	Acknowledged
LACK OF VALIDATION FOR EXTENSIONS OF THE MINT	Informational	Solved
RELIANCE ON MANUAL PROCESS	Informational	Acknowledged - 12/30/2024
POTENTIAL DENIAL OF SERVICE IF POOLS USING NON-REALLOCATED POOLCONFIG WITH THE OLD FORMAT	Informational	Acknowledged - 11/28/2024
LACK OF VALIDATION FOR THE MINIMUM BORROW AMOUNT TO EXCEED THE FEES	Informational	Acknowledged
POTENTIAL COMPLETE PROFIT CAPTURE VIA ADMIN FEES	Informational	Not Applicable
MONEY MOVEMENT WHEN PROTOCOL IS PAUSED IN SOME INSTRUCTIONS	Informational	Solved - 09/27/2024
EA AND POOL OWNER TREASURY WILL ALSO NEED TO APPROVE DELEGATE IF THEY WANT TO CALL DEPOSIT	Informational	Solved - 12/01/2024
LACK OF DELEGATE VALIDATION IN MAKE PAYMENT	Informational	Acknowledged
PASSING SUPERFLUOUS SYSTEM PROGRAM ACCOUNT	Informational	Solved - 09/27/2024
INCONSISTENCIES IN DOCUMENTATION	Informational	Partially Solved - 09/22/2024

Remediation Comment

8. Automated Testing

Halborn strongly recommends conducting a follow-up assessment of the project either within six months or immediately following any material changes to the codebase, whichever comes first. This approach is crucial for maintaining the project’s integrity and addressing potential vulnerabilities introduced by code modifications.

1. Introduction
2. Assessment summary
3. Test approach and methodology
4. Risk methodology
5. Scope
6. Assessment summary & findings overview
7. Findings & Tech Details

7.1 Lack of proper validation in deposit
7.2 Incomplete new owner validation in the transfer ownership process
7.3 Lack of pool name length validation
7.4 Possibility to close started credit with commitment
7.5 Receivable can be approved by different pool
7.6 Lack of currency code length validation
7.7 Reallocating pools with new format will lead to data inconsistency
7.8 Lack of ea and pool owner treasury validation in pool creation
7.9 Lack of delegated amount validation in add redemption requests for premature deposits
7.10 Possibility of inconsistent late payment fees
7.11 Lack of validation for extensions of the mint
7.12 Reliance on manual process
7.13 Potential denial of service if pools using non-reallocated poolconfig with the old format
7.14 Lack of validation for the minimum borrow amount to exceed the fees
7.15 Potential complete profit capture via admin fees
7.16 Money movement when protocol is paused in some instructions
7.17 Ea and pool owner treasury will also need to approve delegate if they want to call deposit
7.18 Lack of delegate validation in make payment
7.19 Passing superfluous system program account
7.20 Inconsistencies in documentation

8. Automated Testing

// Download the full report

Huma - PR 124

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← Back to Audits

Huma - PR 124 - Huma Finance

Prepared by:

HALBORN

Last Updated 04/01/2025

Date of Engagement: December 27th, 2024 - January 2nd, 2025

Summary

100% of all REPORTED Findings have been addressed

All findings

Critical

High

Medium

Low

Informational

1. Introduction
2. Assessment summary
3. Test approach and methodology
4. Risk methodology
5. Scope
6. Assessment summary & findings overview
7. Findings & Tech Details

7.1 Lack of proper validation in deposit
7.2 Incomplete new owner validation in the transfer ownership process
7.3 Lack of pool name length validation
7.4 Possibility to close started credit with commitment
7.5 Receivable can be approved by different pool
7.6 Lack of currency code length validation
7.7 Reallocating pools with new format will lead to data inconsistency
7.8 Lack of ea and pool owner treasury validation in pool creation
7.9 Lack of delegated amount validation in add redemption requests for premature deposits
7.10 Possibility of inconsistent late payment fees
7.11 Lack of validation for extensions of the mint
7.12 Reliance on manual process
7.13 Potential denial of service if pools using non-reallocated poolconfig with the old format
7.14 Lack of validation for the minimum borrow amount to exceed the fees
7.15 Potential complete profit capture via admin fees
7.16 Money movement when protocol is paused in some instructions
7.17 Ea and pool owner treasury will also need to approve delegate if they want to call deposit
7.18 Lack of delegate validation in make payment
7.19 Passing superfluous system program account
7.20 Inconsistencies in documentation

8. Automated Testing

1. Introduction

In December, Huma introduced three incremental features to the protocol:

Monthly interest withdrawals for lenders (LPs)
Ability for the pool owner to make payments on behalf of borrowers
A system account (Sentinel) to automatically trigger redemption requests

Halborn then performed an incremental audit of these new features to ensure the continued security and reliability of the protocol.

2. Assessment Summary

The purpose of the assessment is to:

Identify potential security issues within the Solana Programs.
Ensure that smart contract functionality operates as intended.

In summary, Halborn identified some security concerns. The main ones were the following:

Lack of proper validation in Deposit
Incomplete new owner validation in Transfer Ownership process
Possibility to close started Credit with commitment
Lack of pool name length validation
Lack of pool currency code length validation
Receivable can be approved by different pool
Reallocating pools with new format will lead to data inconsistency

Most of the findings were addressed, and the corresponding fixes have been merged into the branches listed below. The final commits reflect the changes that solved the issues:

80799a02665dab07f695e8c9aee03f50b99af26f on develop branch
5da8c0ac3b6899557ba185379bf4eaa8aa9efe17 on main

3. Test Approach and Methodology

The following phases and associated tools were used throughout the term of the assessment:

Research into the architecture, purpose, and use of the platform.
Manual program source code review to identify business logic issues.
Mapping out possible attack vectors
Thorough assessment of safety and usage of critical Rust variables and functions in scope that could lead to arithmetic vulnerabilities.
Scanning dependencies for known vulnerabilities (
```
cargo audit
```
).
Local runtime testing (
```
anchor-test
```
)

4. RISK METHODOLOGY

The system is designed to assist in identifying and prioritizing vulnerabilities based on their level of risk to address the most critical issues in a timely manner.

4.1 EXPLOITABILITY

Attack Origin (AO):

Captures whether the attack requires compromising a specific account.

Attack Cost (AC):

Attack Complexity (AX):

Metrics:

EXPLOITABILITY METRIC ( $m_e$ )	METRIC VALUE	NUMERICAL VALUE
Attack Origin (AO)	Arbitrary (AO:A) Specific (AO:S)	1 0.2
Attack Cost (AC)	Low (AC:L) Medium (AC:M) High (AC:H)	1 0.67 0.33
Attack Complexity (AX)	Low (AX:L) Medium (AX:M) High (AX:H)	1 0.67 0.33

Exploitability

E

is calculated using the following formula:

$E = \prod m_e$

4.2 IMPACT

Confidentiality (C):

Integrity (I):

Availability (A):

Deposit (D):

Measures the impact to the deposits made to the contract by either users or owners.

Yield (Y):

Measures the impact to the yield generated by the contract for either users or owners.

Metrics:

IMPACT METRIC ( $m_I$ )	METRIC VALUE	NUMERICAL VALUE
Confidentiality (C)	None (C:N) Low (C:L) Medium (C:M) High (C:H) Critical (C:C)	0 0.25 0.5 0.75 1
Integrity (I)	None (I:N) Low (I:L) Medium (I:M) High (I:H) Critical (I:C)	0 0.25 0.5 0.75 1
Availability (A)	None (A:N) Low (A:L) Medium (A:M) High (A:H) Critical (A:C)	0 0.25 0.5 0.75 1
Deposit (D)	None (D:N) Low (D:L) Medium (D:M) High (D:H) Critical (D:C)	0 0.25 0.5 0.75 1
Yield (Y)	None (Y:N) Low (Y:L) Medium (Y:M) High (Y:H) Critical (Y:C)	0 0.25 0.5 0.75 1

Impact

I

is calculated using the following formula:

$I = max(m_I) + \frac{\sum{m_I} - max(m_I)}{4}$

4.3 SEVERITY COEFFICIENT

Reversibility (R):

Describes the share of the exploited vulnerability effects that can be reversed. For upgradeable contracts, assume the contract private key is available.

Scope (S):

Captures whether a vulnerability in one vulnerable contract impacts resources in other contracts.

Metrics:

SEVERITY COEFFICIENT ( $C$ )	COEFFICIENT VALUE	NUMERICAL VALUE
Reversibility ( $r$ )	None (R:N) Partial (R:P) Full (R:F)	1 0.5 0.25
Scope ( $s$ )	Changed (S:C) Unchanged (S:U)	1.25 1

Severity Coefficient

C

is obtained by the following product:

$C = rs$

The Vulnerability Severity Score

S

is obtained by:

$S = min(10, EIC * 10)$

The score is rounded up to 1 decimal places.

Severity	Score Value Range
Critical	9 - 10
High	7 - 8.9
Medium	4.5 - 6.9
Low	2 - 4.4
Informational	0 - 1.9

5. SCOPE

REPOSITORIES

(a) Repository: huma-solana-programs

(b) Assessed Commit ID: 7d84086

00labs/huma-solana-programs/blob/audit/Anchor.toml
00labs/huma-solana-programs/blob/audit/Cargo.lock
00labs/huma-solana-programs/blob/audit/Cargo.toml
00labs/huma-solana-programs/blob/audit/programs/huma/Cargo.toml
00labs/huma-solana-programs/blob/audit/programs/huma/Xargo.toml
00labs/huma-solana-programs/blob/audit/programs/huma/src/common/calendar.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/common/calendar/tests.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/common/constants.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/common/errors.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/common/huma_config/instructions/create_huma_config.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/common/huma_config/instructions/liquidity_asset.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/common/huma_config/instructions/mod.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/common/huma_config/instructions/pause.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/common/huma_config/instructions/update_huma_config.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/common/huma_config/mod.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/common/huma_config/states.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/common/mod.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/common/preconditions.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/common/utils.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/credit.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/due_manager.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/due_manager/tests.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/events.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/approve_credit.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/approve_receivable.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/close_credit.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/create_receivable.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/declare_payment.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/drawdown.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/make_payment.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/make_principal_payment.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/manage_credit.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/manage_credit_config.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/mod.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/refresh_credit.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/start_committed_credit.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/submit_receivable.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/instructions/update_receivable.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/mod.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/states.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/credit/test_utils.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/lib.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/epoch_manager.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/admin_fees.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/close_epoch.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/close_pool.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/create_pool.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/create_pool_accounts.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/disable_pool.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/enable_pool.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/mock_pnl.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/mod.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/pool_operator.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/instructions/update_pool_config.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/mod.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/pnl.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/pool.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/states.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/tranches_policy.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/tranches_policy/fixed_senior_yield_tranches_policy.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/pool/tranches_policy/risk_adjusted_tranches_policy.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/add_redemption_request.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/cancel_redemption_request.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/close_lender_accounts.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/create_lender_accounts.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/deposit.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/disburse.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/make_initial_deposit.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/manage_lender.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/mod.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/transfer_hook.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/update_to_latest_redemption_record.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/instructions/withdraw_after_pool_closure.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/mod.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/states.rs
00labs/huma-solana-programs/blob/audit/programs/huma/src/tranche_vault/tranche_vault.rs
00labs/huma-solana-programs/blob/audit/programs/tranche-token-hook/Cargo.toml
00labs/huma-solana-programs/blob/audit/programs/tranche-token-hook/src/constants.rs
00labs/huma-solana-programs/blob/audit/programs/tranche-token-hook/src/errors.rs
00labs/huma-solana-programs/blob/audit/programs/tranche-token-hook/src/instructions/mod.rs
00labs/huma-solana-programs/blob/audit/programs/tranche-token-hook/src/instructions/transfer.rs
00labs/huma-solana-programs/blob/audit/programs/tranche-token-hook/src/lib.rs

00labs/huma-solana-programs/blob/audit/Anchor.toml
00labs/huma-solana-programs/blob/audit/Cargo.lock
00labs/huma-solana-programs/blob/audit/Cargo.toml

↓ Expand ↓

(a) Repository: huma-solana-programs

(b) Assessed Commit ID: https://github.com/00labs/huma-solana-programs/pull/113

huma/src/pool/instructions/update_pool_config.rs
huma/src/pool/states.rs
huma/src/tranche_vault/instructions/add_redemption_request.rs

↓ Expand ↓

(a) Repository: huma-solana-programs

(b) Assessed Commit ID: https://github.com/00labs/huma-solana-programs/pull/118

programs/huma/src/common/constants.rs
programs/huma/src/lib.rs
programs/huma/src/tranche_vault/instructions/manage_lender.rs

↓ Expand ↓

Out-of-Scope: Everything that was not changed within this PR, third party dependencies and economic attacks.

(a) Repository: huma-solana-programs

(b) Assessed Commit ID: https://github.com/00labs/huma-solana-programs/pull/120

programs/huma/src/common/errors.rs
programs/huma/src/common/preconditions.rs
programs/huma/src/lib.rs

↓ Expand ↓

Out-of-Scope: Everything that was not changed within this PR, third party dependencies and economic attacks.

(a) Repository: huma-solana-programs

(b) Assessed Commit ID: https://github.com/00labs/huma-solana-programs/pull/119

programs/huma/src/pool/epoch_manager.rs

Out-of-Scope: Everything that was not changed within this PR, third party dependencies and economic attacks.

(a) Repository: huma-solana-programs

(b) Assessed Commit ID: https://github.com/00labs/huma-solana-programs/pull/123

programs/huma/src/tranche_vault/instructions/withdraw_yields.rs

Out-of-Scope: Everything that was not changed within this PR, third party dependencies and economic attacks.

(a) Repository: huma-solana-programs

(b) Assessed Commit ID: https://github.com/00labs/huma-solana-programs/pull/124

programs/huma/src/credit/credit.rs
programs/huma/src/credit/instructions/make_payment.rs
programs/huma/src/credit/instructions/make_payment_on_behalf_of.rs

↓ Expand ↓

Out-of-Scope: Everything that was not changed within this PR, third party dependencies and economic attacks.

Out-of-Scope: New features/implementations after the remediation commit IDs.

6. Assessment Summary & Findings Overview

Critical

High

Medium

Low

Informational

Security analysis	Risk level	Remediation Date
LACK OF PROPER VALIDATION IN DEPOSIT	Low	Solved - 09/25/2024
INCOMPLETE NEW OWNER VALIDATION IN THE TRANSFER OWNERSHIP PROCESS	Low	Risk Accepted
LACK OF POOL NAME LENGTH VALIDATION	Low	Solved - 09/25/2024
POSSIBILITY TO CLOSE STARTED CREDIT WITH COMMITMENT	Low	Solved - 09/28/2024
RECEIVABLE CAN BE APPROVED BY DIFFERENT POOL	Low	Solved - 09/25/2024
LACK OF CURRENCY CODE LENGTH VALIDATION	Low	Solved - 09/25/2024
REALLOCATING POOLS WITH NEW FORMAT WILL LEAD TO DATA INCONSISTENCY	Low	Solved - 12/02/2024
LACK OF EA AND POOL OWNER TREASURY VALIDATION IN POOL CREATION	Informational	Acknowledged
LACK OF DELEGATED AMOUNT VALIDATION IN ADD REDEMPTION REQUESTS FOR PREMATURE DEPOSITS	Informational	Solved - 12/01/2024
POSSIBILITY OF INCONSISTENT LATE PAYMENT FEES	Informational	Acknowledged
LACK OF VALIDATION FOR EXTENSIONS OF THE MINT	Informational	Solved
RELIANCE ON MANUAL PROCESS	Informational	Acknowledged - 12/30/2024
POTENTIAL DENIAL OF SERVICE IF POOLS USING NON-REALLOCATED POOLCONFIG WITH THE OLD FORMAT	Informational	Acknowledged - 11/28/2024
LACK OF VALIDATION FOR THE MINIMUM BORROW AMOUNT TO EXCEED THE FEES	Informational	Acknowledged
POTENTIAL COMPLETE PROFIT CAPTURE VIA ADMIN FEES	Informational	Not Applicable
MONEY MOVEMENT WHEN PROTOCOL IS PAUSED IN SOME INSTRUCTIONS	Informational	Solved - 09/27/2024
EA AND POOL OWNER TREASURY WILL ALSO NEED TO APPROVE DELEGATE IF THEY WANT TO CALL DEPOSIT	Informational	Solved - 12/01/2024
LACK OF DELEGATE VALIDATION IN MAKE PAYMENT	Informational	Acknowledged
PASSING SUPERFLUOUS SYSTEM PROGRAM ACCOUNT	Informational	Solved - 09/27/2024
INCONSISTENCIES IN DOCUMENTATION	Informational	Partially Solved - 09/22/2024

Remediation Comment

8. Automated Testing

1. Introduction
2. Assessment summary
3. Test approach and methodology
4. Risk methodology
5. Scope
6. Assessment summary & findings overview
7. Findings & Tech Details

7.1 Lack of proper validation in deposit
7.2 Incomplete new owner validation in the transfer ownership process
7.3 Lack of pool name length validation
7.4 Possibility to close started credit with commitment
7.5 Receivable can be approved by different pool
7.6 Lack of currency code length validation
7.7 Reallocating pools with new format will lead to data inconsistency
7.8 Lack of ea and pool owner treasury validation in pool creation
7.9 Lack of delegated amount validation in add redemption requests for premature deposits
7.10 Possibility of inconsistent late payment fees
7.11 Lack of validation for extensions of the mint
7.12 Reliance on manual process
7.13 Potential denial of service if pools using non-reallocated poolconfig with the old format
7.14 Lack of validation for the minimum borrow amount to exceed the fees
7.15 Potential complete profit capture via admin fees
7.16 Money movement when protocol is paused in some instructions
7.17 Ea and pool owner treasury will also need to approve delegate if they want to call deposit
7.18 Lack of delegate validation in make payment
7.19 Passing superfluous system program account
7.20 Inconsistencies in documentation

Huma - PR 124

Huma Finance

Table of Contents

1. Introduction

2. Assessment Summary

3. Test Approach and Methodology

4. RISK METHODOLOGY

4.1 EXPLOITABILITY

Attack Origin (AO):

Attack Cost (AC):

Attack Complexity (AX):

Metrics:

4.2 IMPACT

Confidentiality (C):

Integrity (I):

Availability (A):

Deposit (D):

Yield (Y):

Metrics:

4.3 SEVERITY COEFFICIENT

Reversibility (R):

Scope (S):

Metrics:

5. SCOPE

6. Assessment Summary & Findings Overview

7. Findings & Tech Details

7.1 LACK OF PROPER VALIDATION IN DEPOSIT

Description

BVSS

Recommendation

Remediation Comment

7.2 INCOMPLETE NEW OWNER VALIDATION IN THE TRANSFER OWNERSHIP PROCESS

Description

BVSS

Recommendation

Remediation Comment

7.3 LACK OF POOL NAME LENGTH VALIDATION

Description

BVSS

Recommendation

Remediation Comment

7.4 POSSIBILITY TO CLOSE STARTED CREDIT WITH COMMITMENT

Description

BVSS

Recommendation

Remediation Comment

7.5 RECEIVABLE CAN BE APPROVED BY DIFFERENT POOL

Description

BVSS

Recommendation

Remediation Comment

7.6 LACK OF CURRENCY CODE LENGTH VALIDATION

Description

BVSS

Recommendation

Remediation Comment

7.7 REALLOCATING POOLS WITH NEW FORMAT WILL LEAD TO DATA INCONSISTENCY

Description

BVSS

Recommendation

Remediation Comment

7.8 LACK OF EA AND POOL OWNER TREASURY VALIDATION IN POOL CREATION

Description

BVSS

Recommendation

Remediation Comment

7.9 LACK OF DELEGATED AMOUNT VALIDATION IN ADD REDEMPTION REQUESTS FOR PREMATURE DEPOSITS

Description

BVSS

Recommendation

Remediation Comment

7.10 POSSIBILITY OF INCONSISTENT LATE PAYMENT FEES

Description

BVSS

Recommendation

Remediation Comment

7.11 LACK OF VALIDATION FOR EXTENSIONS OF THE MINT

Description

BVSS

Recommendation