Sometimes, when invalidating JIT code while following an iterator, the newly generated code could be overwritten incorrectly. This could lead to a potentially exploitable crash. This vulnerability affects Firefox < 111, Firefox ESR < 102.9, and Thunderbird < 102.9.
Fix
Patch, vendor advisory and mitigation references on NVD 8
- https://bugzilla.mozilla.org/show_bug.cgi?id=1814899 Issue Tracking, Permissions Required, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-09/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-10/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-11/ Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1814899 Issue Tracking, Permissions Required, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-09/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-10/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-11/ Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 6.5 · mozillaNVD modified 2026-10-23 23:10
Affected (CPE criteria) 3
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
References 8
- https://bugzilla.mozilla.org/show_bug.cgi?id=1814899 Issue Tracking, Permissions Required, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-09/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-10/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-11/ Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1814899 Issue Tracking, Permissions Required, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-09/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-10/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-11/ Vendor Advisory