Vulnerability Monitor

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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

2014-08-14T05:01:49.943

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 7.8 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: COMPLETE

Exploitability Score

10.0

Impact Score

6.9

Weaknesses

Type: Primary
CWE-476

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	debian	debian_linux	7.0	Yes
Operating System	redhat	enterprise_linux_desktop	7.0	Yes
Operating System	redhat	enterprise_linux_hpc_node	7.0	Yes
Operating System	redhat	enterprise_linux_server	7.0	Yes
Operating System	redhat	enterprise_linux_workstation	7.0	Yes
Application	mit	kerberos_5	1.10	Yes
Application	mit	kerberos_5	1.10.1	Yes
Application	mit	kerberos_5	1.10.2	Yes
Application	mit	kerberos_5	1.10.3	Yes
Application	mit	kerberos_5	1.10.4	Yes
Application	mit	kerberos_5	1.11	Yes
Application	mit	kerberos_5	1.11.1	Yes
Application	mit	kerberos_5	1.11.2	Yes
Application	mit	kerberos_5	1.11.3	Yes
Application	mit	kerberos_5	1.11.4	Yes
Application	mit	kerberos_5	1.11.5	Yes
Application	mit	kerberos_5	1.12	Yes
Application	mit	kerberos_5	1.12.1	Yes

References

http://advisories.mageia.org/MGASA-2014-0345.html ([email protected])
http://aix.software.ibm.com/aix/efixes/security/nas_advisory1.asc ([email protected])
http://krbdev.mit.edu/rt/Ticket/Display.html?id=7970 Issue Tracking, Third Party Advisory ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136360.html ([email protected])
http://rhn.redhat.com/errata/RHSA-2015-0439.html Third Party Advisory ([email protected])
http://secunia.com/advisories/59102 ([email protected])
http://secunia.com/advisories/60082 ([email protected])
http://secunia.com/advisories/60448 ([email protected])
http://secunia.com/advisories/61051 ([email protected])
http://support.f5.com/kb/en-us/solutions/public/15000/500/sol15561.html ([email protected])
http://www.debian.org/security/2014/dsa-3000 Third Party Advisory ([email protected])
http://www.mandriva.com/security/advisories?name=MDVSA-2014:165 ([email protected])
http://www.osvdb.org/109389 ([email protected])
http://www.securityfocus.com/bid/69160 ([email protected])
http://www.securitytracker.com/id/1030706 ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=1121877 ([email protected])
https://exchange.xforce.ibmcloud.com/vulnerabilities/95210 ([email protected])
https://github.com/krb5/krb5/commit/524688ce87a15fc75f87efc8c039ba4c7d5c197b ([email protected])
https://github.com/krb5/krb5/commit/a7886f0ed1277c69142b14a2c6629175a6331edc Issue Tracking, Patch, Third Party Advisory ([email protected])
http://advisories.mageia.org/MGASA-2014-0345.html (af854a3a-2127-422b-91ae-364da2661108)
http://aix.software.ibm.com/aix/efixes/security/nas_advisory1.asc (af854a3a-2127-422b-91ae-364da2661108)
http://krbdev.mit.edu/rt/Ticket/Display.html?id=7970 Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136360.html (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2015-0439.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/59102 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/60082 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/60448 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/61051 (af854a3a-2127-422b-91ae-364da2661108)
http://support.f5.com/kb/en-us/solutions/public/15000/500/sol15561.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2014/dsa-3000 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.mandriva.com/security/advisories?name=MDVSA-2014:165 (af854a3a-2127-422b-91ae-364da2661108)
http://www.osvdb.org/109389 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/69160 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1030706 (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=1121877 (af854a3a-2127-422b-91ae-364da2661108)
https://exchange.xforce.ibmcloud.com/vulnerabilities/95210 (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/krb5/krb5/commit/524688ce87a15fc75f87efc8c039ba4c7d5c197b (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/krb5/krb5/commit/a7886f0ed1277c69142b14a2c6629175a6331edc Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)