{"id":"GHSA-7ggw-h8pp-r95r","aliases":["CVE-2021-3311"],"title":"October CMS Session ID not invalidated after logout","description":"### Impact\nWhen logging out, the session ID was not invalidated. This is not a problem while the user is logged out, but as soon as the user logs back in the old session ID would be valid again; which means that anyone that gained access to the old session cookie would be able to act as the logged in user. This is not a major concern for the majority of cases, since it requires a malicious party gaining access to the session cookie in the first place, but nevertheless has been fixed.\n\n### Patches\nIssue has been patched in Build 472 (v1.0.472) and v1.1.2.\n\n### Workarounds\nApply https://github.com/octobercms/library/commit/642f597489e6f644d4bd9a0c267e864cabead024 to your installation manually if unable to upgrade to Build 472 or v1.1.2.\n\n### References\n- Reported by Anisio (Brazilian Information Security Analyst)\n- http://cve.circl.lu/cve/CVE-2021-3311\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Email us at [hello@octobercms.com](mailto:hello@octobercms.com)\n\n### Threat assessment:\n\"Screen","severity":"critical","score":9.8,"published":"2021-02-10T02:32:35.000Z","modified":"2024-02-16T08:20:41.182Z","withdrawn":false,"knownExploited":false,"affected":[{"ecosystem":"Packagist","name":"october/rain","ranges":[{"events":[{"introduced":"0"},{"fixed":"1.0.472"}],"type":"ECOSYSTEM"}],"versions":["v1.0.319","v1.0.320","v1.0.321","v1.0.322","v1.0.323","v1.0.324","v1.0.325","v1.0.326","v1.0.327","v1.0.328","v1.0.329","v1.0.330","v1.0.331","v1.0.332","v1.0.333","v1.0.334","v1.0.335","v1.0.336","v1.0.337","v1.0.338","v1.0.339","v1.0.340","v1.0.341","v1.0.342","v1.0.343","v1.0.344","v1.0.345","v1.0.346","v1.0.347","v1.0.348","v1.0.349","v1.0.350","v1.0.351","v1.0.352","v1.0.353","v1.0.354","v1.0.355","v1.0.356","v1.0.357","v1.0.358","v1.0.359","v1.0.360","v1.0.361","v1.0.362","v1.0.363","v1.0.364","v1.0.365","v1.0.366","v1.0.367","v1.0.368","v1.0.369","v1.0.370","v1.0.371","v1.0.372","v1.0.373","v1.0.374","v1.0.375","v1.0.376","v1.0.377","v1.0.378","v1.0.379","v1.0.380","v1.0.381","v1.0.382","v1.0.383","v1.0.384","v1.0.385","v1.0.386","v1.0.387","v1.0.388","v1.0.389","v1.0.390","v1.0.391","v1.0.392","v1.0.393","v1.0.394","v1.0.395","v1.0.396","v1.0.397","v1.0.398","v1.0.399","v1.0.400","v1.0.401","v1.0.402","v1.0.403","v1.0.404","v1.0.405","v1.0.406","v1.0.407","v1.0.408","v1.0.409","v1.0.410","v1.0.411","v1.0.412","v1.0.413","v1.0.414","v1.0.415","v1.0.416","v1.0.417","v1.0.418","v1.0.419","v1.0.420","v1.0.421","v1.0.422","v1.0.423","v1.0.424","v1.0.425","v1.0.426","v1.0.427","v1.0.428","v1.0.429","v1.0.430","v1.0.431","v1.0.432","v1.0.433","v1.0.434","v1.0.435","v1.0.436","v1.0.437","v1.0.438","v1.0.439","v1.0.440","v1.0.441","v1.0.442","v1.0.443","v1.0.444","v1.0.445","v1.0.446","v1.0.447","v1.0.448","v1.0.449","v1.0.450","v1.0.451","v1.0.452","v1.0.453","v1.0.454","v1.0.455","v1.0.456","v1.0.457","v1.0.458","v1.0.459","v1.0.460","v1.0.461","v1.0.462","v1.0.463","v1.0.464","v1.0.465","v1.0.466","v1.0.467","v1.0.468","v1.0.469","v1.0.470","v1.0.471"],"fixed":["1.0.472"]},{"ecosystem":"Packagist","name":"october/rain","ranges":[{"events":[{"introduced":"1.1.0"},{"fixed":"1.1.2"}],"type":"ECOSYSTEM"}],"versions":["v1.1.0","v1.1.1"],"fixed":["1.1.2"]}],"references":["https://github.com/octobercms/october/security/advisories/GHSA-7ggw-h8pp-r95r","https://nvd.nist.gov/vuln/detail/CVE-2021-3311","https://github.com/octobercms/library/commit/642f597489e6f644d4bd9a0c267e864cabead024","https://anisiosantos.me/october-cms-token-reactivation","https://octobercms.com/forum/chan/announcements","https://packagist.org/packages/october/rain","http://cve.circl.lu/cve/CVE-2021-3311"],"sources":[{"name":"OSV","id":"GHSA-7ggw-h8pp-r95r","modified":"2024-02-16T08:20:41.182309Z","url":"https://osv.dev/vulnerability/GHSA-7ggw-h8pp-r95r"}],"assessments":[{"source":"OSV","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8}]}