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    CVE-2020-12421

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 This could have caused add-ons to become out-of-date silently without notification to the user.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

    Published:Jun 30, 2020
    Last Modified:Nov 21, 2024
    EPS:Jul 9, 2020
    EPSS Score:0.00823
    CVSS Score:6.5

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Mozilla
    Product
    Firefox
    Vendor
    Mozilla
    Product
    Firefox Esr
    Vendor
    Mozilla
    Product
    Thunderbird
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel E4s
    Vendor
    Redhat
    Product
    Rhel Eus

    Exploits

    No exploit reference

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    References

    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://bugzilla.mozilla.org/show_bug.cgi?id=1308251
    https://security.gentoo.org/glsa/202007-09
    https://security.gentoo.org/glsa/202007-10
    https://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/
    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://bugzilla.mozilla.org/show_bug.cgi?id=1308251
    https://security.gentoo.org/glsa/202007-09
    https://security.gentoo.org/glsa/202007-10
    https://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/

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High