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    CVE-2012-4216

    Use-after-free vulnerability in the gfxFont::GetFontEntry function in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird before 17.0, Thunderbird ESR 10.x before 10.0.11, and SeaMonkey before 2.14 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.

    Published:Nov 20, 2012
    Last Modified:Apr 11, 2025
    EPS:Nov 21, 2012
    EPSS Score:0.0639
    CVSS Score:9.3

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Mozilla
    Product
    Firefox
    Vendor
    Mozilla
    Product
    Seamonkey
    Vendor
    Mozilla
    Product
    Thunderbird
    Vendor
    Mozilla
    Product
    Thunderbird Esr
    Vendor
    Opensuse
    Product
    Opensuse
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Desktop
    Vendor
    Redhat
    Product
    Enterprise Linux Eus
    Vendor
    Redhat
    Product
    Enterprise Linux Server
    Vendor
    Redhat
    Product
    Enterprise Linux Workstation
    Vendor
    Suse
    Product
    Linux Enterprise Desktop
    Vendor
    Suse
    Product
    Linux Enterprise Server
    Vendor
    Suse
    Product
    Linux Enterprise Software Development Kit

    Exploits

    https://bugzilla.mozilla.org/show_bug.cgi?id=798853https://bugzilla.mozilla.org/show_bug.cgi?id=798853

    Related CVEs

    CVE-2026-13476 (CVSS 7.3) — IBM Informix Dynamic Server 14.10, 15.0, and 12.10 could allow an unauthenticated user to execute arbitrary co…
    CVE-2026-13367 (CVSS 7.8) — IBM Informix Dynamic Server 14.10, and 15.0 contain a local privilege escalation vulnerability in the oninit s…
    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…
    CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…
    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…
    CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…
    CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…
    CVE-2026-47330 (CVSS 3.3) — Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an u…

    References

    http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00021.html
    http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00022.html
    http://lists.opensuse.org/opensuse-updates/2012-11/msg00090.html
    http://lists.opensuse.org/opensuse-updates/2012-11/msg00092.html
    http://lists.opensuse.org/opensuse-updates/2012-11/msg00093.html
    http://osvdb.org/87609
    http://rhn.redhat.com/errata/RHSA-2012-1482.html
    http://rhn.redhat.com/errata/RHSA-2012-1483.html
    http://secunia.com/advisories/51359
    http://secunia.com/advisories/51360
    http://secunia.com/advisories/51369
    http://secunia.com/advisories/51370
    http://secunia.com/advisories/51381
    http://secunia.com/advisories/51434
    http://secunia.com/advisories/51439
    http://secunia.com/advisories/51440
    http://www.debian.org/security/2012/dsa-2583
    http://www.debian.org/security/2012/dsa-2584
    http://www.debian.org/security/2012/dsa-2588
    http://www.mandriva.com/security/advisories?name=MDVSA-2012:173
    http://www.mozilla.org/security/announce/2012/mfsa2012-105.html
    http://www.securityfocus.com/bid/56634
    http://www.ubuntu.com/usn/USN-1636-1
    http://www.ubuntu.com/usn/USN-1638-1
    http://www.ubuntu.com/usn/USN-1638-2
    http://www.ubuntu.com/usn/USN-1638-3
    https://bugzilla.mozilla.org/show_bug.cgi?id=798853
    https://exchange.xforce.ibmcloud.com/vulnerabilities/80189
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16902
    http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00021.html
    http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00022.html
    http://lists.opensuse.org/opensuse-updates/2012-11/msg00090.html
    http://lists.opensuse.org/opensuse-updates/2012-11/msg00092.html
    http://lists.opensuse.org/opensuse-updates/2012-11/msg00093.html
    http://osvdb.org/87609
    http://rhn.redhat.com/errata/RHSA-2012-1482.html
    http://rhn.redhat.com/errata/RHSA-2012-1483.html
    http://secunia.com/advisories/51359
    http://secunia.com/advisories/51360
    http://secunia.com/advisories/51369
    http://secunia.com/advisories/51370
    http://secunia.com/advisories/51381
    http://secunia.com/advisories/51434
    http://secunia.com/advisories/51439
    http://secunia.com/advisories/51440
    http://www.debian.org/security/2012/dsa-2583
    http://www.debian.org/security/2012/dsa-2584
    http://www.debian.org/security/2012/dsa-2588
    http://www.mandriva.com/security/advisories?name=MDVSA-2012:173
    http://www.mozilla.org/security/announce/2012/mfsa2012-105.html
    http://www.securityfocus.com/bid/56634
    http://www.ubuntu.com/usn/USN-1636-1
    http://www.ubuntu.com/usn/USN-1638-1
    http://www.ubuntu.com/usn/USN-1638-2
    http://www.ubuntu.com/usn/USN-1638-3
    https://bugzilla.mozilla.org/show_bug.cgi?id=798853
    https://exchange.xforce.ibmcloud.com/vulnerabilities/80189
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16902

    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