CVE-2024-21629: evm — Fix

Description

Rust EVM is an Ethereum Virtual Machine interpreter. In `rust-evm`, a feature called `record_external_operation` was introduced, allowing library users to record custom gas changes. This feature can have some bogus interactions with the call stack. In particular, during finalization of a `CREATE` or `CREATE2`, in the case that the substack execution happens successfully, `rust-evm` will first commit the substate, and then call `record_external_operation(Write(out_code.len()))`. If `record_external_operation` later fails, this error is returned to the parent call stack, instead of `Succeeded`. Yet, the substate commitment already happened. This causes smart contracts able to commit state changes, when the parent caller contract receives zero address (which usually indicates that the execution has failed). This issue only impacts library users with custom `record_external_operation` that returns errors. The issue is patched in release 0.41.1. No known workarounds are available.

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CVSS v3.1 Score

5.9

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Weakness Type (CWE)

CWE-703 CWE-703

Affected Products

Vendor	Product	Versions
evm_project	evm	< 0.41.1

References

Advisories & Patches

https://github.com/rust-ethereum/evm/commit/d8991ec727ad0fb64fe9957a3cd307387a6701e4 https://github.com/rust-ethereum/evm/pull/264 https://github.com/rust-ethereum/evm/security/advisories/GHSA-27wg-99g8-2v4v https://github.com/rust-ethereum/evm/commit/d8991ec727ad0fb64fe9957a3cd307387a6701e4 https://github.com/rust-ethereum/evm/pull/264 https://github.com/rust-ethereum/evm/security/advisories/GHSA-27wg-99g8-2v4v

Other References

https://github.com/rust-ethereum/evm/blob/release-v041/src/executor/stack/executor.rs#L1012C25-L1012C69 https://github.com/rust-ethereum/evm/blob/release-v041/src/executor/stack/executor.rs#L1012C25-L1012C69

Frequently Asked Questions

What is CVE-2024-21629? +

Rust EVM is an Ethereum Virtual Machine interpreter. In `rust-evm`, a feature called `record_external_operation` was introduced, allowing library users to record custom gas changes. This feature can have some bogus interactions with the call stack. In particular, during finalization of a `CREATE` or `CREATE2`, in the case that the substack execution happens successfully, `rust-evm` will first commit the substate, and then call `record_external_operation(Write(out_code.len()))`. If `record_external_operation` later fails, this error is returned to the parent call stack, instead of `Succeeded`. Yet, the substate commitment already happened. This causes smart contracts able to commit state changes, when the parent caller contract receives zero address (which usually indicates that the execution has failed). This issue only impacts library users with custom `record_external_operation` that returns errors. The issue is patched in release 0.41.1. No known workarounds are available. It has a CVSS v3.1 base score of 5.9 (MEDIUM).

How severe is CVE-2024-21629? +

CVE-2024-21629 has a CVSS v3.1 score of 5.9 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-21629? +

CVE-2024-21629 affects products from evm_project, specifically: evm. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-21629? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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