USN-916-1: Kerberos vulnerabilities

23 March 2010

krb5 vulnerabilities

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

  • Ubuntu 9.10

Software Description

  • krb5

Details

Emmanuel Bouillon discovered that Kerberos did not correctly handle certain message types. An unauthenticated remote attacker could send specially crafted traffic to cause the KDC to crash, leading to a denial of service. (CVE-2010-0283)

Nalin Dahyabhai, Jan iankko Lieskovsky, and Zbysek Mraz discovered that Kerberos did not correctly handle certain GSS packets. An unauthenticated remote attacker could send specially crafted traffic that would cause services using GSS-API to crash, leading to a denial of service. (CVE-2010-0628)

Update instructions

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

Ubuntu 9.10
krb5-kdc - 1.7dfsg~beta3-1ubuntu0.5
libgssapi-krb5-2 - 1.7dfsg~beta3-1ubuntu0.5

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