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    CVE-2020-12417

    Due to confusion about ValueTags on JavaScript Objects, an object may pass through the type barrier, resulting in memory corruption and a potentially exploitable crash. *Note: this issue only affects Firefox on ARM64 platforms.* 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:0.00757
    CVSS Score:8.8

    Affected Products

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

    Exploits

    https://bugzilla.mozilla.org/show_bug.cgi?id=1640737https://bugzilla.mozilla.org/show_bug.cgi?id=1640737

    Related CVEs

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    CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …
    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
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    CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…
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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=1640737
    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=1640737
    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