{"id":"GHSA-4g63-c64m-25w9","summary":"OpenZeppelin Contracts's SignatureChecker may revert on invalid EIP-1271 signers","details":"### Impact\n\n`SignatureChecker.isValidSignatureNow` is not expected to revert. However, an incorrect assumption about Solidity 0.8's `abi.decode` allows some cases to revert, given a target contract that doesn't implement EIP-1271 as expected.\n\nThe contracts that may be affected are those that use `SignatureChecker` to check the validity of a signature and handle invalid signatures in a way other than reverting. We believe this to be unlikely.\n\n### Patches\n\nThe issue was patched in 4.7.1.\n\n### References\n\nhttps://github.com/OpenZeppelin/openzeppelin-contracts/pull/3552\n\n### For more information\n\nIf you have any questions or comments about this advisory, or need assistance deploying the fix, email us at [security@openzeppelin.com](mailto:security@openzeppelin.com).","aliases":["CVE-2022-31172"],"modified":"2023-11-08T04:09:28.648312Z","published":"2022-07-21T22:33:37Z","database_specific":{"cwe_ids":["CWE-20","CWE-347"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2022-07-21T22:33:37Z","nvd_published_at":"2022-07-22T04:15:00Z"},"references":[{"type":"WEB","url":"https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-4g63-c64m-25w9"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-31172"},{"type":"WEB","url":"https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3552"}],"affected":[{"package":{"name":"@openzeppelin/contracts","ecosystem":"npm","purl":"pkg:npm/%40openzeppelin/contracts"},"ranges":[{"type":"SEMVER","events":[{"introduced":"4.1.0"},{"fixed":"4.7.1"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/07/GHSA-4g63-c64m-25w9/GHSA-4g63-c64m-25w9.json"}},{"package":{"name":"@openzeppelin/contracts-upgradeable","ecosystem":"npm","purl":"pkg:npm/%40openzeppelin/contracts-upgradeable"},"ranges":[{"type":"SEMVER","events":[{"introduced":"4.1.0"},{"fixed":"4.7.1"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/07/GHSA-4g63-c64m-25w9/GHSA-4g63-c64m-25w9.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"}]}