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Vulnerability CVE-2021-29949
Published: 2021-06-24
Description: |
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. |
Type:
CWE-427 (Uncontrolled Search Path Element)
CVSS2 => (AV:L/AC:M/Au:N/C:P/I:P/A:P)
CVSS Base Score |
Impact Subscore |
Exploitability Subscore |
4.4/10 |
6.4/10 |
3.4/10 |
Exploit range |
Attack complexity |
Authentication |
Local |
Medium |
No required |
Confidentiality impact |
Integrity impact |
Availability impact |
Partial |
Partial |
Partial |
References: |
https://www.mozilla.org/security/advisories/mfsa2021-13/
https://bugzilla.mozilla.org/show_bug.cgi?id=1682101
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