Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Thunderbird | < 78.9.1 |
Related Weaknesses (CWE)
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1682101Permissions RequiredVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-13/Release NotesVendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1682101Permissions RequiredVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-13/Release NotesVendor Advisory
FAQ
What is CVE-2021-29949?
CVE-2021-29949 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 a...
How severe is CVE-2021-29949?
CVE-2021-29949 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-29949?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Thunderbird.