CVE-2020-12421
4.3 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
0.005 Low
EPSS
Percentile
76.8%
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 This could have caused add-ons to become out-of-date silently without notification to the user.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.
Affected configurations
References
lists.opensuse.org/opensuse-security-announce/2020-07/msg00023.html
lists.opensuse.org/opensuse-security-announce/2020-07/msg00026.html
lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html
lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html
bugzilla.mozilla.org/show_bug.cgi?id=1308251
security.gentoo.org/glsa/202007-09
security.gentoo.org/glsa/202007-10
usn.ubuntu.com/4421-1/
www.mozilla.org/security/advisories/mfsa2020-24/
www.mozilla.org/security/advisories/mfsa2020-25/
www.mozilla.org/security/advisories/mfsa2020-26/
Related
4.3 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
0.005 Low
EPSS
Percentile
76.8%