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3.3 KiB
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3.3 KiB
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{"schema_version":"1.9.0","id":"GHSA-rm8v-mxj3-5rmq","published":"2023-06-14T17:24:36Z","modified":"2023-11-08T04:22:49.387484Z","aliases":["GO-2023-1859"],"summary":"github.com/lestrrat-go/jwx vulnerable to Potential Padding Oracle Attack","details":"### Summary\n\nDecrypting AES-CBC encrypted JWE has Potential Padding Oracle Attack Vulnerability.\n\n### Details\n\nOn [v2.0.10](https://github.com/lestrrat-go/jwx/releases/tag/v2.0.10), decrypting AES-CBC encrypted JWE may return an error \"failed to generate plaintext from decrypted blocks: invalid padding\":\n\nhttps://github.com/lestrrat-go/jwx/blob/8840ffd4afc5839f591ff0e9ba9034af52b1643e/jwe/internal/aescbc/aescbc.go#L210-L213\n\nReporting padding error causes [Padding Oracle Attack](https://en.wikipedia.org/wiki/Padding_oracle_attack) Vulnerability.\nRFC 7516 JSON Web Encryption (JWE) says that we **MUST NOT** do this.\n\n> 11.5. Timing Attacks\n> To mitigate the attacks described in RFC 3218 [RFC3218], the\n> recipient MUST NOT distinguish between format, padding, and length\n> errors of encrypted keys. It is strongly recommended, in the event\n> of receiving an improperly formatted key, that the recipient\n> substitute a randomly generated CEK and proceed to the next step, to\n> mitigate timing attacks.\n\nIn addition, the time to remove padding depends on the length of the padding.\nIt may leak the length of the padding by Timing Attacks.\n\nhttps://github.com/lestrrat-go/jwx/blob/796b2a9101cf7e7cb66455e4d97f3c158ee10904/jwe/internal/aescbc/aescbc.go#L33-L66\n\nTo mitigate Timing Attacks, it MUST be done in constant time.\n\n### Impact\n\nThe authentication tag is verified, so it is not an immediate attack.\n","affected":[{"package":{"name":"github.com/lestrrat-go/jwx/v2","ecosystem":"Go","purl":"pkg:golang/github.com/lestrrat-go/jwx/v2"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.0.11"}]}],"database_specific":{"last_known_affected_version_range":"<= 2.0.10","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/06/GHSA-rm8v-mxj3-5rmq/GHSA-rm8v-mxj3-5rmq.json"}},{"package":{"name":"github.com/lestrrat-go/jwx","ecosystem":"Go","purl":"pkg:golang/github.com/lestrrat-go/jwx"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.2.26"}]}],"database_specific":{"last_known_affected_version_range":"<= 1.2.25","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/06/GHSA-rm8v-mxj3-5rmq/GHSA-rm8v-mxj3-5rmq.json"}}],"references":[{"type":"WEB","url":"https://github.com/lestrrat-go/jwx/security/advisories/GHSA-rm8v-mxj3-5rmq"},{"type":"WEB","url":"https://github.com/lestrrat-go/jwx/commit/6c41e3822485fc7e11dd70b4b0524b075d66b103"},{"type":"WEB","url":"https://github.com/lestrrat-go/jwx/commit/d9ddbc8e5009cfdd8c28413390b67afa7f576dd6"},{"type":"PACKAGE","url":"https://github.com/lestrrat-go/jwx"},{"type":"WEB","url":"https://github.com/lestrrat-go/jwx/blob/796b2a9101cf7e7cb66455e4d97f3c158ee10904/jwe/internal/aescbc/aescbc.go#L33-L66"},{"type":"WEB","url":"https://github.com/lestrrat-go/jwx/blob/8840ffd4afc5839f591ff0e9ba9034af52b1643e/jwe/internal/aescbc/aescbc.go#L210-L213"}],"database_specific":{"cwe_ids":[],"github_reviewed":true,"github_reviewed_at":"2023-06-14T17:24:36Z","nvd_published_at":null,"severity":"MODERATE"}} |