CVE-2020-12421
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 1.8%
exploitation probability
1.8%top 22% of all CVEs
observed exploitation
nono source reports it
When performing add-on updates, certificate chains terminating in non-built-in-roots were rejected (even if they were legitimately added by an administrator.) This could have caused add-ons to become out-of-date silently without notification to the user. This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.
References
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00023.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-07/msg00026.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.htmlhttps://bugzilla.mozilla.org/show_bug.cgi?id=1308251https://security.gentoo.org/glsa/202007-09https://security.gentoo.org/glsa/202007-10https://usn.ubuntu.com/4421-1/https://www.mozilla.org/security/advisories/mfsa2020-24/https://www.mozilla.org/security/advisories/mfsa2020-25/https://www.mozilla.org/security/advisories/mfsa2020-26/