CVE-2023-6863

The `ShutdownObserver()` was susceptible to potentially undefined behavior due to its reliance on a dynamic type that lacked a virtual destructor. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.

Score

CVSS 3.1 8.8 High

Status

Modified - security@mozilla.org

Published

2023-12-19

Last modified

2025-02-13

Affected products

• Debian Linux (Debian)
• Firefox (Mozilla)
• Firefox Esr (Mozilla)
• Thunderbird (Mozilla)

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1868901
• https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html
• https://security.gentoo.org/glsa/202401-10
• https://www.debian.org/security/2023/dsa-5581
• https://www.mozilla.org/security/advisories/mfsa2023-54/
• https://www.mozilla.org/security/advisories/mfsa2023-55/
• https://www.mozilla.org/security/advisories/mfsa2023-56/