CVE-2024-1936
The encrypted subject of an email message could be incorrectly and permanently assigned to an arbitrary other email message in Thunderbird's local cache.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.68%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The encrypted subject of an email message could be incorrectly and permanently assigned to an arbitrary other email message in Thunderbird's local cache. Consequently, when replying to the contaminated email message, the user might accidentally leak the confidential subject to a third-party. While this update fixes the bug and avoids future message contamination, it does not automatically repair existing contaminations. Users are advised to use the repair folder functionality, which is available from the context menu of email folders, which will erase incorrect subject assignments. This vulnerability affects Thunderbird < 115.8.1.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 0.68% probability · 51th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-922
- Affected
- mozilla/thunderbird · debian/debian linux
- Source
- security@mozilla.org
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1860977Exploit, Issue Tracking, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2024/03/msg00022.htmlMailing List
- https://www.mozilla.org/security/advisories/mfsa2024-11/Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1860977Exploit, Issue Tracking, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2024/03/msg00022.htmlMailing List
- https://www.mozilla.org/security/advisories/mfsa2024-11/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.