CVE-2021-29949
Last modified
CVE-2021-29949 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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. EPSS estimates a 0.32% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Thunderbird | < 78.9.1 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1682101Permissions Required, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-13/Release Notes, Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1682101Permissions Required, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-13/Release Notes, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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