{"id":"GHSA-96c6-m98x-hxjx","aliases":[],"url":"https://o3.security/vulnerability/GHSA-96c6-m98x-hxjx","summary":"Zend-Session session validation vulnerability","details":"`Zend\\Session` session validators do not work as expected if set prior to the start of a session.\n\nFor instance, the following test case fails (where $this->manager is an instance of `Zend\\Session\\SessionManager`):\n```\n$this\n    ->manager\n    ->getValidatorChain()\n    ->attach('session.validate', array(new RemoteAddr(), 'isValid'));\n\n$this->manager->start();\n\n$this->assertSame(\n    array(\n        'Zend\\Session\\Validator\\RemoteAddr' =3D> '',\n    ),\n    $_SESSION['__ZF']['_VALID']\n);\n```\nThe implication is that subsequent calls to `Zend\\Session\\SessionManager#start()` (in later requests, assuming a session was created) will not have any validator metadata attached, which causes any validator metadata to be re-built from scratch, thus marking the session as valid.\n\nAn attacker is thus able to simply ignore session validators such as `RemoteAddr` or `HttpUserAgent`, since the \"signature\" that these validators check against is not being stored in the session.","published":"2024-06-07T21:25:23Z","modified":"2024-12-04T05:40:26.255578Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"zendframework/zend-session","fixedVersion":"2.2.9"},{"ecosystem":"Packagist","name":"zendframework/zend-session","fixedVersion":"2.3.4"}],"fix":{"url":"https://github.com/zendframework/zend-session/commit/05fa95488b5ade513c4dcc56051a7ddb1c94f341","label":"zendframework/zend-session@05fa954"},"references":[{"type":"WEB","url":"https://github.com/zendframework/zend-session/commit/05fa95488b5ade513c4dcc56051a7ddb1c94f341"},{"type":"WEB","url":"https://github.com/zendframework/zend-session/commit/1272fc047121720130690c324413629d8f63d210"},{"type":"WEB","url":"https://github.com/zendframework/zend-session/commit/35014ab0ae17c2a169320f182697ee9fe73d841e"},{"type":"WEB","url":"https://github.com/zendframework/zend-session/commit/3b1a65b3193a4219f5c4259ab8735f9ad254a021"},{"type":"WEB","url":"https://github.com/zendframework/zend-session/commit/6a27a9fddd8f5b12b3af0de6309181ff5946dd0e"},{"type":"WEB","url":"https://github.com/zendframework/zend-session/commit/7c4b73dd64e01001946aac76c6deddfe1c6ef0be"},{"type":"WEB","url":"https://github.com/zendframework/zend-session/commit/7fc94bd6a60342416242a3899d63072c471b33d3"},{"type":"WEB","url":"https://github.com/zendframework/zend-session/commit/93b43aa0ca5348d29034f67195ffa3f4082878d5"},{"type":"WEB","url":"https://github.com/zendframework/zend-session/commit/9868f84513536446b0bac81cc95e0130b0a6fc9c"},{"type":"WEB","url":"https://github.com/zendframework/zend-session/commit/a3382bfd3067f527762294b5fc622550988e6862"},{"type":"WEB","url":"https://github.com/zendframework/zend-session/commit/b1903947e285568344b3458e4524b016ce311072"},{"type":"WEB","url":"https://github.com/zendframework/zend-session/commit/ff9236cc4c4944b5f5a6fbfee01420ef82c4fa91"},{"type":"WEB","url":"https://framework.zend.com/security/advisory/ZF2015-01"},{"type":"WEB","url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/zendframework/zend-session/ZF2015-01.yaml"},{"type":"PACKAGE","url":"https://github.com/zendframework/zend-session"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2024-12-04T05:40:26.255578Z"}}