USN-879-1: Kerberos vulnerability

6 January 2010

krb5 vulnerability

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

  • Ubuntu 9.10

Software Description

  • krb5

Details

Jeff Blaine, Radoslav Bodo, Jakob Haufe, and Jorgen Wahlsten discovered that the Kerberos Key Distribution Center service did not correctly verify certain network traffic. An unauthenticated remote attacker could send a specially crafted request that would cause the KDC to crash, leading to a denial of service.

Update instructions

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

Ubuntu 9.10
krb5-kdc - 1.7dfsg~beta3-1ubuntu0.1

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

In general, a standard system upgrade is sufficient to effect the necessary changes.

References