{"id":"CVE-2021-27343","details":"SerenityOS Unspecified is affected by: Buffer Overflow. The impact is: obtain sensitive information (context-dependent). The component is: /Userland/Libraries/LibCrypto/ASN1/DER.h Crypto::der_decode_sequence() function. The attack vector is: Parsing RSA Key ASN.1.","modified":"2026-04-11T16:26:12.940352Z","published":"2021-04-06T13:15:14.200Z","references":[{"type":"ADVISORY","url":"https://github.com/SerenityOS/serenity/commit/48fbf6a88d4822a1e5470cf08f29464511bd72c1"},{"type":"ADVISORY","url":"https://github.com/SerenityOS/serenity/issues/5317"},{"type":"ADVISORY","url":"https://github.com/SerenityOS/serenity/pull/5344"},{"type":"FIX","url":"https://github.com/SerenityOS/serenity/commit/48fbf6a88d4822a1e5470cf08f29464511bd72c1"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/serenityos/serenity","events":[{"introduced":"0"},{"fixed":"48fbf6a88d4822a1e5470cf08f29464511bd72c1"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-27343.json","vanir_signatures_modified":"2026-04-11T16:26:12Z","vanir_signatures":[{"target":{"file":"Userland/Libraries/LibCrypto/NumberTheory/ModularFunctions.cpp"},"deprecated":false,"digest":{"line_hashes":["246327850437052761092821625439304214026","308301083473644505651325781879639804677","77560250645919544720371500414797554081","12573670662844942890449571103667546113"],"threshold":0.9},"id":"CVE-2021-27343-883a05d8","signature_type":"Line","signature_version":"v1","source":"https://github.com/serenityos/serenity/commit/48fbf6a88d4822a1e5470cf08f29464511bd72c1"}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"}]}