PT-2023-22769 · Openzeppelin · Openzeppelin Contracts

Frangio · Published 2023-04-16 · Updated 2023-04-27 · CVE-2023-30542

Positive Technologies (AI Summary)

CVSS v3.1

6.8

Medium

Base vector

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

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

Description The proposal creation entrypoint (propose) in GovernorCompatibilityBravo allows the creation of proposals with a signatures array shorter than the calldatas array. This causes the additional elements of the latter to be ignored, and if the proposal succeeds the corresponding actions would eventually execute without any calldata. The ProposalCreated event correctly represents what will eventually execute, but the proposal parameters as queried through getActions appear to respect the original intended calldata.

Recommendations For versions prior to 4.8.3, update to version 4.8.3 to resolve the issue. As a temporary workaround, ensure that all proposals that pass through governance have equal length signatures and calldatas parameters.

Exploit

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2023-30542

GHSA-93HQ-5WGC-JC82

Affected Products

Openzeppelin Contracts

References · 10

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/30xxx/CVE-2023-30542.json · Exploit
• https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-93hq-5wgc-jc82 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-30542 · Security Note
• https://osv.dev/vulnerability/GHSA-93hq-5wgc-jc82 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-30542 · 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/commit/8d633cb7d169f2f8595b273660b00b69e845c2fe · Note
• https://t.me/cvenotify/49182 · Telegram Post
• https://t.me/cvenotify/48377 · Telegram Post