4.4
CVSSv2

CVE-2021-29949

Published: 24/06/2021 Updated: 30/06/2021
CVSS v2 Base Score: 4.4 | Impact Score: 6.4 | Exploitability Score: 3.4
CVSS v3 Base Score: 7.8 | Impact Score: 5.9 | Exploitability Score: 1.8
VMScore: 392
Vector: AV:L/AC:M/Au:N/C:P/I:P/A:P

Vulnerability Summary

When loading the shared library that provides the OTR protocol implementation, Thunderbird will initially attempt to open it using a filename that isn't distributed by Thunderbird. If a computer has already been infected with a malicious library of the alternative filename, and the malicious library has been copied to a directory that is contained in the search path for executable libraries, then Thunderbird will load the incorrect library. This vulnerability affects Thunderbird < 78.9.1.

Vulnerability Trend

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mozilla thunderbird

Vendor Advisories

Multiple security issues were discovered in Thunderbird, which could result in the execution of arbitrary code or information disclosure In adddition a number of security issues were addressed in the OpenPGP support For the stable distribution (buster), these problems have been fixed in version 1:78100-1~deb10u1 We recommend that you upgrade y ...
Mozilla Foundation Security Advisory 2021-13 Security Vulnerabilities fixed in Thunderbird 7891 Announced April 8, 2021 Impact moderate Products Thunderbird Fixed in Thunderbird 7891 ...
No description is available for this CVE ...
A security issue was found in Thunderbird before version 7891 When loading the shared library that provides the OTR protocol implementation, Thunderbird will initially attempt to open it using a filename that isn't distributed by Thunderbird If a computer has already been infected with a malicious library of the alternative filename, and the ma ...