CVE-2012-1016

Description

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.

CVSS Metrics

• v2.0•MEDIUM•Score: 5AV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS Trends

Current EPSS score: 0.64%• Percentile: 71%

Techniques & Countermeasures

• CWE-476•NULL Pointer Dereference

  The product dereferences a pointer that it expects to be valid but is NULL.

Affected Systems

• mit•kerberos_5

  < 1.10.4

References (4)

• http://secunia.com/advisories/55040
• http://web.mit.edu/kerberos/www/krb5-1.10/
• http://krbdev.mit.edu/rt/Ticket/Display.html?id=7527
• https://github.com/krb5/krb5/commit/db64ca25d661a47b996b4e2645998b5d7f0eb52c