Description
Certificate length was not properly checked when added to a certificate store. In practice only trusted data was processed. This vulnerability was fixed in Firefox 135, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Mozilla Firefox
128.7 to ≤ 128.*unaffected135 to ≤ *unaffected
Mozilla Thunderbird
128.7 to ≤ 128.*unaffected135 to ≤ *unaffected
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1940804 ↗
- https://www.mozilla.org/security/advisories/mfsa2025-07/ ↗
- https://www.mozilla.org/security/advisories/mfsa2025-09/ ↗
- https://www.mozilla.org/security/advisories/mfsa2025-10/ ↗
- https://www.mozilla.org/security/advisories/mfsa2025-11/ ↗
- https://lists.debian.org/debian-lts-announce/2025/02/msg00006.html ↗