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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (6.61%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 2.0
- 7.8 HIGHAV:N/AC:L/Au:N/C:N/I:N/A:C
- EPSS
- 6.61% probability · 93th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- debian/debian linux · redhat/enterprise linux desktop · redhat/enterprise linux hpc node · redhat/enterprise linux server · redhat/enterprise linux workstation · mit/kerberos 5
- Source
- cve@mitre.org
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=7970Issue Tracking, Third Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136360.html
- http://rhn.redhat.com/errata/RHSA-2015-0439.htmlThird Party Advisory
- 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-3000Third Party Advisory
- 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/a7886f0ed1277c69142b14a2c6629175a6331edcIssue Tracking, Patch, Third Party Advisory
- 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=7970Issue Tracking, Third Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136360.html
- http://rhn.redhat.com/errata/RHSA-2015-0439.htmlThird Party Advisory
- 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-3000Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.