Vulnerability Description
Thunderbird unexpectedly enabled JavaScript in the composition area. The JavaScript execution context was limited to this area and did not receive chrome-level privileges, but could be used as a stepping stone to further an attack with other vulnerabilities. This vulnerability affects Thunderbird < 91.4.0.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Thunderbird | < 91.4.0 |
| Debian | Debian Linux | 9.0 |
Related Weaknesses (CWE)
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1742579Broken LinkIssue TrackingPermissions Required
- https://lists.debian.org/debian-lts-announce/2022/01/msg00001.htmlMailing ListThird Party Advisory
- https://security.gentoo.org/glsa/202208-14Third Party Advisory
- https://www.debian.org/security/2022/dsa-5034Issue TrackingThird Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-54/Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1742579Broken LinkIssue TrackingPermissions Required
- https://lists.debian.org/debian-lts-announce/2022/01/msg00001.htmlMailing ListThird Party Advisory
- https://security.gentoo.org/glsa/202208-14Third Party Advisory
- https://www.debian.org/security/2022/dsa-5034Issue TrackingThird Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-54/Vendor Advisory
FAQ
What is CVE-2021-43528?
CVE-2021-43528 is a vulnerability with a CVSS score of 6.5 (MEDIUM). Thunderbird unexpectedly enabled JavaScript in the composition area. The JavaScript execution context was limited to this area and did not receive chrome-level privileges, but could be used as a stepp...
How severe is CVE-2021-43528?
CVE-2021-43528 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-43528?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Thunderbird, Debian Debian Linux.