PT-2023-22768 · Openzeppelin · Openzeppelin Contracts

Frangiop · Published 2023-04-17 · Updated 2023-04-27 · CVE-2023-30541

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Name of the Vulnerable Software and Affected Versions OpenZeppelin Contracts versions prior to 4.8.3

Description A function in the implementation contract may be inaccessible if its selector clashes with one of the proxy's own selectors. Specifically, if the clashing function has a different signature with incompatible ABI encoding, the proxy could revert while attempting to decode the arguments from calldata. The probability of an accidental clash is negligible, but one could be caused deliberately and could cause a reduction in availability.

Recommendations For versions prior to 4.8.3, update to version 4.8.3 to resolve the issue. As a temporary workaround, if a function appears to be inaccessible for this reason, it may be possible to craft the calldata such that ABI decoding does not fail at the proxy and the function is properly proxied through.

Exploit

Fix

Weakness Enumeration

CWE-436

Related Identifiers

CVE-2023-30541

GHSA-MX2Q-35M2-X2RH

Affected Products

Openzeppelin Contracts

References · 11

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/30xxx/CVE-2023-30541.json · Exploit
• https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4154 · Patch
• https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-mx2q-35m2-x2rh · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-mx2q-35m2-x2rh · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-30541 · Security Note
• https://osv.dev/vulnerability/CVE-2023-30541 · Vendor Advisory
• https://github.com/OpenZeppelin/openzeppelin-contracts/releases/tag/v4.8.3 · Note
• https://github.com/OpenZeppelin/openzeppelin-contracts · Note
• https://github.com/OpenZeppelin/openzeppelin-contracts-upgradeable/commit/58fa0f81c4036f1a3b616fdffad2fd27e5d5ce21 · Note
• https://t.me/cvenotify/48471 · Telegram Post
• https://t.me/cvenotify/48470 · Telegram Post