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CVE Database

CVE-2012-1016

Impact: Moderate
Public: 2013-02-15
Bugzilla: 917840: CVE-2012-1016 krb5: PKINIT null pointer deref leads to DoS

Details

The MITRE CVE dictionary describes this issue as:

The pkinit_server_return_padata function in plugins/preauth/pkinit/pkinit_srv.c in the PKINIT implementation in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.4 attempts to find an agility KDF identifier in inappropriate circumstances, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted Draft 9 request.

Find out more about CVE-2012-1016 from the MITRE CVE dictionary and NIST NVD.

Statement

This issue did not affect the versions of krb5 as shipped with Red Hat Enterprise Linux 5 as they did not include support for PKINIT.

CVSS v2 metrics

Base Score: 4.3
Base Metrics: AV:N/AC:M/Au:N/C:N/I:N/A:P
Access Vector: Network
Access Complexity: Medium
Authentication: None
Confidentiality Impact: None
Integrity Impact: None
Availability Impact: Partial

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat security errata

Platform Errata Release Date
Red Hat Enterprise Linux version 6 (krb5) RHSA-2013:0656 March 18, 2013

External References

http://krbdev.mit.edu/rt/Ticket/Display.html?id=7527

http://web.mit.edu/kerberos/www/krb5-1.10/

This page is generated automatically and has not been checked for errors or omissions.

For clarification or corrections please contact the Red Hat Security Response Team.