Use After Free Affecting thunderbird package, versions <1:91.3.0-1
Threat Intelligence
EPSS
0.29% (70th
percentile)
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk ID SNYK-DEBIAN12-THUNDERBIRD-2314127
- published 10 Dec 2021
- disclosed 8 Dec 2021
Introduced: 8 Dec 2021
CVE-2021-43535 Open this link in a new tabHow to fix?
Upgrade Debian:12 thunderbird to version 1:91.3.0-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream thunderbird package and not the thunderbird package as distributed by Debian.
See How to fix? for Debian:12 relevant fixed versions and status.
A use-after-free could have occured when an HTTP2 session object was released on a different thread, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.3, and Firefox ESR < 91.3.
References
- https://security-tracker.debian.org/tracker/CVE-2021-43535
- https://bugzilla.mozilla.org/show_bug.cgi?id=1667102
- https://www.mozilla.org/security/advisories/mfsa2021-43/
- https://www.mozilla.org/security/advisories/mfsa2021-49/
- https://www.mozilla.org/security/advisories/mfsa2021-50/
- https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html
- https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html
- https://www.debian.org/security/2021/dsa-5026
- https://www.debian.org/security/2022/dsa-5034
CVSS Scores
version 3.1