GHSA-5h3x-9wvq-w4m2
Dashboard / Vulnerabilities / GHSA-5h3x-9wvq-w4m2
Summary: OpenZeppelin Contracts's governor proposal creation may be blocked by frontrunning
Details: ### 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/
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-upgradeable/commit/66f390fa516b550838e2c2f65132b5bc2afe1ced, https://github.com/OpenZeppelin/openzeppelin-contracts/commit/d9474327a492f9f310f31bc53f38dbea56ed9a57, https://github.com/OpenZeppelin/openzeppelin-contracts, https://github.com/OpenZeppelin/openzeppelin-contracts/releases/tag/v4.9.1
Affected packages
Package
Name: @openzeppelin/contracts
Purl: pkg:npm/%40openzeppelin/contracts
Affected ranges
Type: SEMVER
Events:
