CVE-2021-29949

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CVE-2021-29949

Summary:

Details: 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.

References: https://www.mozilla.org/security/advisories/mfsa2021-13/, https://bugzilla.mozilla.org/show_bug.cgi?id=1682101