{"id":"CVE-2017-12872","aliases":["GHSA-v882-949x-6v28"],"url":"https://o3.security/vulnerability/CVE-2017-12872","summary":"SimpleSAMLphp allows timing side-channel attacks","details":"The (1) Htpasswd authentication source in the authcrypt module and (2) SimpleSAML_Session class in SimpleSAMLphp 1.14.11 and earlier allow remote attackers to conduct timing side-channel attacks by leveraging use of the standard comparison operator to compare secret material against user input.","published":"2017-09-01T21:29:00.563Z","modified":"2026-07-08T05:49:09.298873029Z","cvss":{"score":5.9,"severity":"MEDIUM","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"simplesamlphp/simplesamlphp","fixedVersion":"1.15.0-rc1"}],"fix":{"url":"https://github.com/simplesamlphp/simplesamlphp/commit/b72c79e3070f930d758f5c269333d63ed7509e2e","label":"simplesamlphp/simplesamlphp@b72c79e"},"references":[{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2017/12/msg00007.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2018/06/msg00017.html"},{"type":"FIX","url":"https://simplesamlphp.org/security/201703-01"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2017-12872"},{"type":"WEB","url":"https://github.com/simplesamlphp/simplesamlphp/commit/b72c79e3070f930d758f5c269333d63ed7509e2e"},{"type":"WEB","url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/simplesamlphp/simplesamlphp/CVE-2017-12872.yaml"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T05:49:09.298873029Z"}}