USN-940-2: Kerberos vulnerability
21 July 2010
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 10.04 LTS
An attacker could send crafted input to kadmind and cause it to crash.
- krb5 - MIT Kerberos
USN-940-1 fixed vulnerabilities in Kerberos. This update provides the corresponding updates for Ubuntu 10.04.
Original advisory details:
Joel Johnson, Brian Almeida, and Shawn Emery discovered that Kerberos did not correctly verify certain packet structures. An unauthenticated remote attacker could send specially crafted traffic to cause the KDC or kadmind services to crash, leading to a denial of service. (CVE-2010-1320, CVE-2010-1321)
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.