OpenZeppelin Contracts is a library for secure smart contract development. This issue concerns instances of Governor that use the module `GovernorVotesQuorumFraction`, a mechanism that determines quorum requirements as a percentage of the voting token's total supply. In affected instances, when a proposal is passed to lower the quorum requirements, past proposals may become executable if they had been defeated only due to lack of quorum, and the number of votes it received meets the new quorum requirement. Analysis of instances on chain found only one proposal that met this condition, and we are actively monitoring for new occurrences of this particular issue. This issue has been patched in v4.7.2. Users are advised to upgrade. Users unable to upgrade should consider avoiding lowering quorum requirements if a past proposal was defeated for lack of quorum.
CVE-2022-31198 - High Severity Vulnerability
contracts-upgradeable-3.4.1.tgz
Secure Smart Contract library for Solidity
Library home page: https://registry.npmjs.org/@openzeppelin/contracts-upgradeable/-/contracts-upgradeable-3.4.1.tgz
Path to dependency file: /net-emissions-token-network/package.json
Path to vulnerable library: /net-emissions-token-network/package.json
Dependency Hierarchy: - :x: **contracts-upgradeable-3.4.1.tgz** (Vulnerable Library)
contracts-3.3.0.tgz
Secure Smart Contract library for Solidity
Library home page: https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-3.3.0.tgz
Path to dependency file: /net-emissions-token-network/package.json
Path to vulnerable library: /net-emissions-token-network/package.json
Dependency Hierarchy: - :x: **contracts-3.3.0.tgz** (Vulnerable Library)
Found in HEAD commit: d388e16464e00b9ce84df0d247029f534a429b90
Found in base branch: main
OpenZeppelin Contracts is a library for secure smart contract development. This issue concerns instances of Governor that use the module `GovernorVotesQuorumFraction`, a mechanism that determines quorum requirements as a percentage of the voting token's total supply. In affected instances, when a proposal is passed to lower the quorum requirements, past proposals may become executable if they had been defeated only due to lack of quorum, and the number of votes it received meets the new quorum requirement. Analysis of instances on chain found only one proposal that met this condition, and we are actively monitoring for new occurrences of this particular issue. This issue has been patched in v4.7.2. Users are advised to upgrade. Users unable to upgrade should consider avoiding lowering quorum requirements if a past proposal was defeated for lack of quorum.
Publish Date: 2022-08-01
URL: CVE-2022-31198
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: None - Integrity Impact: High - Availability Impact: None
For more information on CVSS3 Scores, click here.Type: Upgrade version
Origin: https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-xrc4-737v-9q75
Release Date: 2022-08-01
Fix Resolution: 4.7.2
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