CVE-2024-1936

Mozilla: Leaking of encrypted email subjects to other conversations

Published Mar 4, 2024 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-3769-1 thunderbird security update
Debian DSA Debian DSA DSA-5644-1 thunderbird security update
Ubuntu USN Ubuntu USN USN-6669-1 Thunderbird vulnerabilities
History
Type Values Removed Values Added
First Time appeared Debian
Debian debian Linux
CPEs cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Vendors & Products Debian
Debian debian Linux
Type Values Removed Values Added
First Time appeared Mozilla
Mozilla thunderbird
CPEs cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
Vendors & Products Mozilla
Mozilla thunderbird
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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. 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.
Type Values Removed Values Added
Weaknesses CWE-922
Weaknesses

Sources

Status
PUBLISHED
Assigner
mozilla
Published
Updated
Nov 26, 2024, 1:34 PM
Reserved
Feb 27, 2024, 3:09 PM
Status
Analyzed
Published
Mar 4, 2024, 10:15 PM
Modified
Jun 17, 2026, 7:05 AM
Severity
Important
Public date
Mar 4, 2024, 12:00 AM