Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS01aDN4LTl3dnEtdzRtMs4AAzvg

OpenZeppelin Contracts's governor proposal creation may be blocked by frontrunning

Impact

By frontrunning the creation of a proposal, an attacker can become the proposer and gain the ability to cancel it. The attacker can do this repeatedly to try to prevent a proposal from being proposed at all.

This impacts the Governor contract in v4.9.0 only, and the GovernorCompatibilityBravo contract since v4.3.0.

Patches

The problem has been patched in 4.9.1 by introducing opt-in frontrunning protection.

Workarounds

Submit the proposal creation transaction to an endpoint with frontrunning protection.

Credit

Reported by Lior Abadi and Joaquin Pereyra from Coinspect.

References

https://www.coinspect.com/openzeppelin-governor-dos/

Permalink: https://github.com/advisories/GHSA-5h3x-9wvq-w4m2
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS01aDN4LTl3dnEtdzRtMs4AAzvg
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: 11 months ago
Updated: 5 months ago

CVSS Score: 5.3
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Identifiers: GHSA-5h3x-9wvq-w4m2, CVE-2023-34234
References:

• https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-5h3x-9wvq-w4m2
• https://nvd.nist.gov/vuln/detail/CVE-2023-34234
• https://github.com/OpenZeppelin/openzeppelin-contracts/commit/d9474327a492f9f310f31bc53f38dbea56ed9a57
• https://github.com/OpenZeppelin/openzeppelin-contracts/releases/tag/v4.9.1
• https://github.com/OpenZeppelin/openzeppelin-contracts-upgradeable/commit/66f390fa516b550838e2c2f65132b5bc2afe1ced
• https://github.com/advisories/GHSA-5h3x-9wvq-w4m2

Repository: https://github.com/OpenZeppelin/openzeppelin-contracts
Blast Radius: 24.1

Affected Packages