If a MIME email combines OpenPGP and OpenPGP MIME data in a certain way Thunderbird repeatedly attempts to process and display the message, which could cause Thunderbird's user interface to lock up and no longer respond to the user's actions. An attacker could send a crafted message with this structure to attempt a DoS attack. This vulnerability affects Thunderbird < 102.8.
Fix
Patch, vendor advisory and mitigation references on NVD 4
- https://bugzilla.mozilla.org/show_bug.cgi?id=1806507 Issue Tracking, Permissions Required, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-07/ Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1806507 Issue Tracking, Permissions Required, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-07/ 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 4
- https://bugzilla.mozilla.org/show_bug.cgi?id=1806507 Issue Tracking, Permissions Required, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-07/ Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1806507 Issue Tracking, Permissions Required, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-07/ Vendor Advisory