Double Free Affecting thunderbird package, versions <1:68.7.0-1
Threat Intelligence
Exploit Maturity
Mature
EPSS
0.89% (84th
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-1560933
- published 3 Apr 2020
- disclosed 24 Apr 2020
Introduced: 3 Apr 2020
CVE-2020-6820 Open this link in a new tabHow to fix?
Upgrade Debian:12 thunderbird to version 1:68.7.0-1 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.
Under certain conditions, when handling a ReadableStream, a race condition can cause a use-after-free. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Thunderbird < 68.7.0, Firefox < 74.0.1, and Firefox ESR < 68.6.1.
References
- https://security-tracker.debian.org/tracker/CVE-2020-6820
- https://www.mozilla.org/security/advisories/mfsa2020-11/
- https://www.mozilla.org/security/advisories/mfsa2020-14/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1626728
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2020-6820
- https://usn.ubuntu.com/4335-1/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog
CVSS Scores
version 3.1