{"id":"GHSA-96c6-m98x-hxjx","aliases":[],"title":"Zend-Session session validation vulnerability","description":"`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session.","severity":"medium","score":6.5,"published":"2024-06-07T21:25:23.000Z","modified":"2024-12-04T05:40:26.255Z","withdrawn":false,"knownExploited":false,"affected":[{"ecosystem":"Packagist","name":"zendframework/zend-session","ranges":[{"events":[{"introduced":"2.0.0"},{"fixed":"2.2.9"}],"type":"ECOSYSTEM"}],"versions":["2.0.3","2.0.4","2.0.5","2.0.6","2.0.7","2.0.8","2.1.0","2.1.1","2.1.2","2.1.3","2.1.4","2.1.5","2.1.6","2.2.0","2.2.0rc1","2.2.0rc2","2.2.0rc3","2.2.1","2.2.2","2.2.3","2.2.4","2.2.5","2.2.6","2.2.7","2.2.8"],"fixed":["2.2.9"]},{"ecosystem":"Packagist","name":"zendframework/zend-session","ranges":[{"events":[{"introduced":"2.3.0"},{"fixed":"2.3.4"}],"type":"ECOSYSTEM"}],"versions":["2.3.0","2.3.1","2.3.2","2.3.3"],"fixed":["2.3.4"]}],"references":["https://github.com/zendframework/zend-session/commit/05fa95488b5ade513c4dcc56051a7ddb1c94f341","https://github.com/zendframework/zend-session/commit/1272fc047121720130690c324413629d8f63d210","https://github.com/zendframework/zend-session/commit/35014ab0ae17c2a169320f182697ee9fe73d841e","https://github.com/zendframework/zend-session/commit/3b1a65b3193a4219f5c4259ab8735f9ad254a021","https://github.com/zendframework/zend-session/commit/6a27a9fddd8f5b12b3af0de6309181ff5946dd0e","https://github.com/zendframework/zend-session/commit/7c4b73dd64e01001946aac76c6deddfe1c6ef0be","https://github.com/zendframework/zend-session/commit/7fc94bd6a60342416242a3899d63072c471b33d3","https://github.com/zendframework/zend-session/commit/93b43aa0ca5348d29034f67195ffa3f4082878d5","https://github.com/zendframework/zend-session/commit/9868f84513536446b0bac81cc95e0130b0a6fc9c","https://github.com/zendframework/zend-session/commit/a3382bfd3067f527762294b5fc622550988e6862","https://github.com/zendframework/zend-session/commit/b1903947e285568344b3458e4524b016ce311072","https://github.com/zendframework/zend-session/commit/ff9236cc4c4944b5f5a6fbfee01420ef82c4fa91","https://framework.zend.com/security/advisory/ZF2015-01","https://github.com/FriendsOfPHP/security-advisories/blob/master/zendframework/zend-session/ZF2015-01.yaml","https://github.com/zendframework/zend-session"],"sources":[{"name":"OSV","id":"GHSA-96c6-m98x-hxjx","modified":"2024-12-04T05:40:26.255578Z","url":"https://osv.dev/vulnerability/GHSA-96c6-m98x-hxjx"}],"assessments":[{"source":"OSV","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","score":6.5}]}