CVE-2014-4344

Severity: high (CVSS 7.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 6.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2014-08-14 · updated 2026-06-17
Weakness: CWE-476

Description

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.

Affected products

Debian Linux: 7.0
MIT Kerberos 5: 1.10, 1.10.1, 1.10.2, 1.10.3, 1.10.4, 1.11 (+7)
RedHat Enterprise Linux Desktop: 7.0
RedHat Enterprise Linux Hpc Node: 7.0
RedHat Enterprise Linux Server: 7.0
RedHat Enterprise Linux Workstation: 7.0

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

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