Articles / Ubuntu: New Kerberos packag…

Ubuntu: New Kerberos packages fix security vulnerabilities

Simo Sorce discovered that a NULL pointer dereference existed in the Kerberos Key Distribution Center (KDC). An authenticated remote attacker could use this to cause a denial of service. Updated packages are available from security.ubuntu.com.

==========================================================================
Ubuntu Security Notice USN-1290-1
December 08, 2011

krb5 vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 11.10

Summary:

The Kerberos Key Distribution Center (KDC) could be made to crash.

Software Description:
- krb5: MIT Kerberos Network Authentication Protocol

Details:

Simo Sorce discovered that a NULL pointer dereference existed in
the Kerberos Key Distribution Center (KDC). An authenticated remote
attacker could use this to cause a denial of service.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 11.10:
 krb5-kdc                        1.9.1+dfsg-1ubuntu2.2

In general, a standard system update will make all the necessary changes.

References:
 http://www.ubuntu.com/usn/usn-1290-1
 CVE-2011-1530

Package Information:
 https://launchpad.net/ubuntu/+source/krb5/1.9.1+dfsg-1ubuntu2.2
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