{"id":"UBUNTU-CVE-2022-40958","details":"By injecting a cookie with certain special characters, an attacker on a shared subdomain which is not a secure context could set and thus overwrite cookies from a secure context, leading to session fixation and other attacks. This vulnerability affects Firefox ESR \u003c 102.3, Thunderbird \u003c 102.3, and Firefox \u003c 105.","modified":"2026-02-04T02:30:28.648758Z","published":"2022-09-28T00:00:00Z","related":["USN-5649-1","USN-5724-1"],"upstream":["CVE-2022-40958"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2022-40958"},{"type":"REPORT","url":"https://www.mozilla.org/en-US/security/advisories/mfsa2022-40/#CVE-2022-40958"},{"type":"REPORT","url":"https://www.mozilla.org/en-US/security/advisories/mfsa2022-41/#CVE-2022-40958"},{"type":"REPORT","url":"https://www.mozilla.org/en-US/security/advisories/mfsa2022-42/#CVE-2022-40958"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5649-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5724-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2022-40958"}],"affected":[{"package":{"name":"firefox","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/firefox@105.0+build2-0ubuntu0.18.04.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"105.0+build2-0ubuntu0.18.04.1"}]}],"versions":["56.0+build6-0ubuntu1","57.0.1+build2-0ubuntu1","59.0.1+build1-0ubuntu1","59.0.2+build1-0ubuntu1","60.0+build2-0ubuntu1","60.0.1+build2-0ubuntu0.18.04.1","60.0.2+build1-0ubuntu0.18.04.1","61.0+build3-0ubuntu0.18.04.1","61.0.1+build1-0ubuntu0.18.04.1","62.0+build2-0ubuntu0.18.04.3","62.0+build2-0ubuntu0.18.04.4","62.0+build2-0ubuntu0.18.04.5","62.0.3+build1-0ubuntu0.18.04.1","63.0+build2-0ubuntu0.18.04.2","63.0.3+build1-0ubuntu0.18.04.1","64.0+build3-0ubuntu0.18.04.1","65.0+build2-0ubuntu0.18.04.1","65.0.1+build2-0ubuntu0.18.04.1","66.0+build3-0ubuntu0.18.04.1","66.0.1+build1-0ubuntu0.18.04.1","66.0.2+build1-0ubuntu0.18.04.1","66.0.3+build1-0ubuntu0.18.04.1","66.0.4+build3-0ubuntu0.18.04.1","66.0.5+build1-0ubuntu0.18.04.1","67.0+build2-0ubuntu0.18.04.1","67.0.1+build1-0ubuntu0.18.04.1","67.0.2+build2-0ubuntu0.18.04.1","67.0.3+build1-0ubuntu0.18.04.1","67.0.4+build1-0ubuntu0.18.04.1","68.0+build3-0ubuntu0.18.04.1","68.0.1+build1-0ubuntu0.18.04.1","68.0.2+build1-0ubuntu0.18.04.1","69.0+build2-0ubuntu0.18.04.1","69.0.1+build1-0ubuntu0.18.04.1","69.0.2+build1-0ubuntu0.18.04.1","70.0+build2-0ubuntu0.18.04.1","70.0.1+build1-0ubuntu0.18.04.1","71.0+build5-0ubuntu0.18.04.1","72.0.1+build1-0ubuntu0.18.04.1","72.0.2+build1-0ubuntu0.18.04.1","73.0+build3-0ubuntu0.18.04.1","73.0.1+build1-0ubuntu0.18.04.1","74.0+build3-0ubuntu0.18.04.1","74.0.1+build1-0ubuntu0.18.04.1","75.0+build3-0ubuntu0.18.04.1","76.0+build2-0ubuntu0.18.04.1","76.0.1+build1-0ubuntu0.18.04.1","77.0.1+build1-0ubuntu0.18.04.1","78.0.1+build1-0ubuntu0.18.04.1","78.0.2+build2-0ubuntu0.18.04.1","79.0+build1-0ubuntu0.18.04.1","80.0+build2-0ubuntu0.18.04.1","80.0.1+build1-0ubuntu0.18.04.1","81.0+build2-0ubuntu0.18.04.1","81.0.2+build1-0ubuntu0.18.04.1","82.0+build2-0ubuntu0.18.04.1","82.0.2+build1-0ubuntu0.18.04.1","82.0.3+build1-0ubuntu0.18.04.1","83.0+build2-0ubuntu0.18.04.2","84.0+build3-0ubuntu0.18.04.1","84.0.1+build1-0ubuntu0.18.04.1","84.0.2+build1-0ubuntu0.18.04.1","85.0+build1-0ubuntu0.18.04.1","85.0.1+build1-0ubuntu0.18.04.1","86.0+build3-0ubuntu0.18.04.1","86.0.1+build1-0ubuntu0.18.04.1","87.0+build3-0ubuntu0.18.04.2","88.0+build2-0ubuntu0.18.04.2","88.0.1+build1-0ubuntu0.18.04.2","89.0+build2-0ubuntu0.18.04.2","89.0.1+build1-0ubuntu0.18.04.1","89.0.2+build1-0ubuntu0.18.04.1","90.0+build1-0ubuntu0.18.04.1","90.0.2+build1-0ubuntu0.18.04.1","91.0+build2-0ubuntu0.18.04.1","91.0.1+build1-0ubuntu0.18.04.1","91.0.2+build1-0ubuntu0.18.04.1","92.0+build3-0ubuntu0.18.04.1","93.0+build1-0ubuntu0.18.04.1","94.0+build3-0ubuntu0.18.04.1","95.0+build1-0ubuntu0.18.04.1","95.0.1+build2-0ubuntu0.18.04.1","96.0+build2-0ubuntu0.18.04.1","97.0+build2-0ubuntu0.18.04.1","97.0.2+build1-0ubuntu0.18.04.1","98.0+build3-0ubuntu0.18.04.2","98.0.1+build2-0ubuntu0.18.04.1","98.0.2+build1-0ubuntu0.18.04.1","99.0+build2-0ubuntu0.18.04.2","100.0+build2-0ubuntu0.18.04.1","100.0.2+build1-0ubuntu0.18.04.1","101.0.1+build1-0ubuntu0.18.04.1","102.0+build2-0ubuntu0.18.04.1","103.0+build1-0ubuntu0.18.04.1","104.0+build3-0ubuntu0.18.04.1"],"ecosystem_specific":{"binaries":[{"binary_version":"105.0+build2-0ubuntu0.18.04.1","binary_name":"firefox"},{"binary_version":"105.0+build2-0ubuntu0.18.04.1","binary_name":"firefox-dev"},{"binary_version":"105.0+build2-0ubuntu0.18.04.1","binary_name":"firefox-geckodriver"},{"binary_version":"105.0+build2-0ubuntu0.18.04.1","binary_name":"firefox-mozsymbols"}],"availability":"No 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