CVE-2021-23969 Affecting thunderbird package, versions <1:78.8.0-1
Threat Intelligence
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-1560740
- published 24 Feb 2021
- disclosed 26 Feb 2021
Introduced: 24 Feb 2021
CVE-2021-23969 Open this link in a new tabHow to fix?
Upgrade Debian:12 thunderbird to version 1:78.8.0-1 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.
As specified in the W3C Content Security Policy draft, when creating a violation report, "User agents need to ensure that the source file is the URL requested by the page, pre-redirects. If that’s not possible, user agents need to strip the URL down to an origin to avoid unintentional leakage." Under certain types of redirects, Firefox incorrectly set the source file to be the destination of the redirects. This was fixed to be the redirect destination's origin. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8.
References
- https://security-tracker.debian.org/tracker/CVE-2021-23969
- https://www.debian.org/security/2021/dsa-4866
- https://security.gentoo.org/glsa/202104-09
- https://security.gentoo.org/glsa/202104-10
- https://bugzilla.mozilla.org/show_bug.cgi?id=1542194
- https://www.mozilla.org/security/advisories/mfsa2021-07/
- https://www.mozilla.org/security/advisories/mfsa2021-08/
- https://www.mozilla.org/security/advisories/mfsa2021-09/
- https://lists.debian.org/debian-lts-announce/2021/03/msg00000.html