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Vulnerability Details : 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.
Publish Date : 2014-08-14 Last Update Date : 2017-01-06
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- CVSS Scores & Vulnerability Types

CVSS Score
7.8
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 476

- Related OVAL Definitions

Title Definition Id Class Family
AIX NAS null deref in SPNEGO acceptor oval:org.mitre.oval:def:26722 unix
DEPRECATED: SUSE-SU-2014:0989-1 -- Security update for krb5 oval:org.mitre.oval:def:27019 unix
DSA-3000-1 krb5 - security update oval:org.mitre.oval:def:25491 unix
ELSA-2014-1245 -- krb5 security and bug fix update (Moderate) oval:org.mitre.oval:def:26536 unix
ELSA-2014-1389 -- krb5 security and bug fix update oval:org.mitre.oval:def:27032 unix
RHSA-2014:1245: krb5 security and bug fix update (Moderate) oval:com.redhat.rhsa:def:20141245 unix
RHSA-2014:1245: krb5 security and bug fix update (Moderate) oval:org.mitre.oval:def:26777 unix
RHSA-2014:1389: krb5 security and bug fix update (Moderate) oval:com.redhat.rhsa:def:20141389 unix
RHSA-2014:1389: krb5 security and bug fix update (Moderate) oval:org.mitre.oval:def:26917 unix
RHSA-2015:0439: krb5 security, bug fix and enhancement update (Moderate) oval:com.redhat.rhsa:def:20150439 unix
SUSE-SU-2014:0989-1 -- Security update for krb5 oval:org.mitre.oval:def:26809 unix
USN-2310-1 -- krb5 vulnerabilities oval:org.mitre.oval:def:26458 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2014-4344

# Product Type Vendor Product Version Update Edition Language
1 OS Debian Debian Linux 7.0 Version Details Vulnerabilities
2 Application MIT Kerberos 5-1.10 Version Details Vulnerabilities
3 Application MIT Kerberos 5-1.10.1 Version Details Vulnerabilities
4 Application MIT Kerberos 5-1.10.2 Version Details Vulnerabilities
5 Application MIT Kerberos 5-1.10.3 Version Details Vulnerabilities
6 Application MIT Kerberos 5-1.10.4 Version Details Vulnerabilities
7 Application MIT Kerberos 5-1.11 Version Details Vulnerabilities
8 Application MIT Kerberos 5-1.11.1 Version Details Vulnerabilities
9 Application MIT Kerberos 5-1.11.2 Version Details Vulnerabilities
10 Application MIT Kerberos 5-1.11.3 Version Details Vulnerabilities
11 Application MIT Kerberos 5-1.11.4 Version Details Vulnerabilities
12 Application MIT Kerberos 5-1.11.5 Version Details Vulnerabilities
13 Application MIT Kerberos 5-1.12 Version Details Vulnerabilities
14 Application MIT Kerberos 5-1.12.1 Version Details Vulnerabilities
15 OS Redhat Enterprise Linux Desktop 7.0 Version Details Vulnerabilities
16 OS Redhat Enterprise Linux Hpc Node 7.0 Version Details Vulnerabilities
17 OS Redhat Enterprise Linux Server 7.0 Version Details Vulnerabilities
18 OS Redhat Enterprise Linux Workstation 7.0 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Debian Debian Linux 1
MIT Kerberos 13
Redhat Enterprise Linux Desktop 1
Redhat Enterprise Linux Hpc Node 1
Redhat Enterprise Linux Server 1
Redhat Enterprise Linux Workstation 1

- References For CVE-2014-4344

http://advisories.mageia.org/MGASA-2014-0345.html CONFIRM
http://aix.software.ibm.com/aix/efixes/security/nas_advisory1.asc CONFIRM
https://bugzilla.redhat.com/show_bug.cgi?id=1121877 CONFIRM
https://github.com/krb5/krb5/commit/524688ce87a15fc75f87efc8c039ba4c7d5c197b CONFIRM
https://github.com/krb5/krb5/commit/a7886f0ed1277c69142b14a2c6629175a6331edc CONFIRM
http://xforce.iss.net/xforce/xfdb/95210
XF kerberos-cve20144344-dos(95210)
http://www.securitytracker.com/id/1030706
SECTRACK 1030706
http://www.securityfocus.com/bid/69160
BID 69160 MIT Kerberos 5 CVE-2014-4344 NULL Pointer Dereference Remote Denial of Service Vulnerability Release Date:2014-11-18
http://www.osvdb.org/109389
OSVDB 109389
http://secunia.com/advisories/60082
SECUNIA 60082
http://secunia.com/advisories/60448
SECUNIA 60448
http://secunia.com/advisories/61051
SECUNIA 61051
http://support.f5.com/kb/en-us/solutions/public/15000/500/sol15561.html CONFIRM
http://www.debian.org/security/2014/dsa-3000
DEBIAN DSA-3000
http://www.mandriva.com/security/advisories?name=MDVSA-2014:165
MANDRIVA MDVSA-2014:165
http://secunia.com/advisories/59102
SECUNIA 59102
http://rhn.redhat.com/errata/RHSA-2015-0439.html
REDHAT RHSA-2015:0439
http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136360.html
FEDORA FEDORA-2014-8189
http://krbdev.mit.edu/rt/Ticket/Display.html?id=7970 CONFIRM

- Metasploit Modules Related To CVE-2014-4344

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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