CVE-2023-6864

Memory safety bugs present in Firefox 120, Firefox ESR 115.5, and Thunderbird 115.5. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.

• CWE-787

• https://bugzilla.mozilla.org/buglist.cgi?bug_id=1736385%2C1810805%2C1846328%2C1856090%2C1858033%2C1858509%2C1862089%2C1862777%2C1864015Broken Link, Issue Tracking
• https://lists.debian.org/debian-lts-announce/2023/12/msg00020.htmlMailing List, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2023/12/msg00021.htmlMailing List, Third Party Advisory
• https://security.gentoo.org/glsa/202401-10Third Party Advisory
• https://www.debian.org/security/2023/dsa-5581Third Party Advisory
• https://www.debian.org/security/2023/dsa-5582Third Party Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-54/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-55/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-56/Vendor Advisory
• https://bugzilla.mozilla.org/buglist.cgi?bug_id=1736385%2C1810805%2C1846328%2C1856090%2C1858033%2C1858509%2C1862089%2C1862777%2C1864015Broken Link, Issue Tracking
• https://lists.debian.org/debian-lts-announce/2023/12/msg00020.htmlMailing List, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2023/12/msg00021.htmlMailing List, Third Party Advisory
• https://security.gentoo.org/glsa/202401-10Third Party Advisory
• https://www.debian.org/security/2023/dsa-5581Third Party Advisory
• https://www.debian.org/security/2023/dsa-5582Third Party Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-54/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-55/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-56/Vendor Advisory

Published

Dec 19, 2023

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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