Certificate OCSP revocation status was not checked when verifying S/Mime signatures. Mail signed with a revoked certificate would be displayed as having a valid signature. Thunderbird versions from 68 to 102.7.0 were affected by this bug. This vulnerability affects Thunderbird < 102.7.1.
Fix
Patch, vendor advisory and mitigation references on NVD 5
- https://bugzilla.mozilla.org/show_bug.cgi?id=1769000 Issue Tracking, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-04/ Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1769000 Issue Tracking, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-04/ Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1769000 Issue Tracking, 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 2026-10-24 13:10
Affected (CPE criteria) 1
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
References 5
- https://bugzilla.mozilla.org/show_bug.cgi?id=1769000 Issue Tracking, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-04/ Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1769000 Issue Tracking, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-04/ Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1769000 Issue Tracking, Vendor Advisory