CVE-2021-23961 The advisory has been revoked - it doesn't affect any version of package thunderbird (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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 IDSNYK-UBUNTU2004-THUNDERBIRD-1065152
- published27 Jan 2021
- disclosed26 Feb 2021
Introduced: 27 Jan 2021
CVE-2021-23961 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:20.04.
NVD Description
Note: Versions mentioned in the description apply only to the upstream thunderbird package and not the thunderbird package as distributed by Ubuntu.
Further techniques that built on the slipstream research combined with a malicious webpage could have exposed both an internal network's hosts as well as services running on the user's local machine. This vulnerability affects Firefox < 85.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2021-23961
- https://www.debian.org/security/2021/dsa-4895
- https://www.debian.org/security/2021/dsa-4897
- https://security.gentoo.org/glsa/202104-09
- https://security.gentoo.org/glsa/202104-10
- https://bugzilla.mozilla.org/show_bug.cgi?id=1677940
- https://www.mozilla.org/security/advisories/mfsa2021-03/
- https://lists.debian.org/debian-lts-announce/2021/04/msg00019.html
- https://lists.debian.org/debian-lts-announce/2021/04/msg00020.html