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    CVE-2014-4344

    The acc_ctx_cont function in the SPNEGO acceptor in lib/gssapi/spnego/spnego_mech.c in MIT Kerberos 5 (aka krb5) 1.5.x through 1.12.x before 1.12.2 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an empty continuation token at a certain point during a SPNEGO negotiation.

    Published:Jul 15, 2014
    Last Modified:Apr 12, 2025
    EPS:Aug 14, 2014
    EPSS Score:0.06988
    CVSS Score:7.8

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Mit
    Product
    Kerberos 5
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Desktop
    Vendor
    Redhat
    Product
    Enterprise Linux Hpc Node
    Vendor
    Redhat
    Product
    Enterprise Linux Server
    Vendor
    Redhat
    Product
    Enterprise Linux Workstation

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    http://advisories.mageia.org/MGASA-2014-0345.html
    http://aix.software.ibm.com/aix/efixes/security/nas_advisory1.asc
    http://krbdev.mit.edu/rt/Ticket/Display.html?id=7970
    http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136360.html
    http://rhn.redhat.com/errata/RHSA-2015-0439.html
    http://secunia.com/advisories/59102
    http://secunia.com/advisories/60082
    http://secunia.com/advisories/60448
    http://secunia.com/advisories/61051
    http://support.f5.com/kb/en-us/solutions/public/15000/500/sol15561.html
    http://www.debian.org/security/2014/dsa-3000
    http://www.mandriva.com/security/advisories?name=MDVSA-2014:165
    http://www.osvdb.org/109389
    http://www.securityfocus.com/bid/69160
    http://www.securitytracker.com/id/1030706
    https://bugzilla.redhat.com/show_bug.cgi?id=1121877
    https://exchange.xforce.ibmcloud.com/vulnerabilities/95210
    https://github.com/krb5/krb5/commit/524688ce87a15fc75f87efc8c039ba4c7d5c197b
    https://github.com/krb5/krb5/commit/a7886f0ed1277c69142b14a2c6629175a6331edc
    http://advisories.mageia.org/MGASA-2014-0345.html
    http://aix.software.ibm.com/aix/efixes/security/nas_advisory1.asc
    http://krbdev.mit.edu/rt/Ticket/Display.html?id=7970
    http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136360.html
    http://rhn.redhat.com/errata/RHSA-2015-0439.html
    http://secunia.com/advisories/59102
    http://secunia.com/advisories/60082
    http://secunia.com/advisories/60448
    http://secunia.com/advisories/61051
    http://support.f5.com/kb/en-us/solutions/public/15000/500/sol15561.html
    http://www.debian.org/security/2014/dsa-3000
    http://www.mandriva.com/security/advisories?name=MDVSA-2014:165
    http://www.osvdb.org/109389
    http://www.securityfocus.com/bid/69160
    http://www.securitytracker.com/id/1030706
    https://bugzilla.redhat.com/show_bug.cgi?id=1121877
    https://exchange.xforce.ibmcloud.com/vulnerabilities/95210
    https://github.com/krb5/krb5/commit/524688ce87a15fc75f87efc8c039ba4c7d5c197b
    https://github.com/krb5/krb5/commit/a7886f0ed1277c69142b14a2c6629175a6331edc

    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