CVE-2020-12421

Summary

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 This could have caused add-ons to become out-of-date silently without notification to the user.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 Software

Weaknesses

• Add-On updates did not respect the same certificate trust rules as software updates

ADP Enrichment

CVE Program Container

Additional References

• https://www.mozilla.org/security/advisories/mfsa2020-24/
• https://www.mozilla.org/security/advisories/mfsa2020-26/
• https://www.mozilla.org/security/advisories/mfsa2020-25/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1308251
• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00023.html
• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00026.html
• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html
• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html
• https://usn.ubuntu.com/4421-1/
• https://security.gentoo.org/glsa/202007-09
• https://security.gentoo.org/glsa/202007-10

References

• https://www.mozilla.org/security/advisories/mfsa2020-24/
• https://www.mozilla.org/security/advisories/mfsa2020-26/
• https://www.mozilla.org/security/advisories/mfsa2020-25/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1308251
• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00023.html
• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00026.html
• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html
• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html
• https://usn.ubuntu.com/4421-1/
• https://security.gentoo.org/glsa/202007-09
• https://security.gentoo.org/glsa/202007-10

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