Information disclosure in Mozilla Thunderbird

1) Information disclosure

EUVDB-ID: #VU87104

Risk: Low

CVSSv4.0: 0.2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-1936

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to an error in Thunderbird when handling local cache. 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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mozilla Thunderbird: 115.0 - 115.8.0

CPE2.3

• cpe:2.3:a:mozilla:mozilla_thunderbird:*:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:mozilla_thunderbird:115.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:mozilla_thunderbird:115.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:mozilla_thunderbird:115.2.0:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:mozilla_thunderbird:115.5.1:*:*:*:*:*:*:*

External links

https://bugzilla.mozilla.org/show_bug.cgi?id=1860977
https://www.mozilla.org/security/advisories/mfsa2024-11/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.