krb5 vulnerability

Related Vulnerabilities: CVE-2011-0285  

An unauthenticated remote user could crash the Kerberos service.

Felipe Ortega discovered that kadmind did not correctly handle password changing error conditions. An unauthenticated remote attacker could exploit this to crash kadmind, leading to a denial of service.

19 April 2011

krb5 vulnerability

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

  • Ubuntu 10.10
  • Ubuntu 10.04 LTS
  • Ubuntu 9.10

Summary

An unauthenticated remote user could crash the Kerberos service.

Software Description

  • krb5 - MIT Kerberos services

Details

Felipe Ortega discovered that kadmind did not correctly handle password changing error conditions. An unauthenticated remote attacker could exploit this to crash kadmind, leading to a denial of service.

Update instructions

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

Ubuntu 10.10
krb5-admin-server - 1.8.1+dfsg-5ubuntu0.7
Ubuntu 10.04 LTS
krb5-admin-server - 1.8.1+dfsg-2ubuntu0.9
Ubuntu 9.10
krb5-admin-server - 1.7dfsg~beta3-1ubuntu0.13

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.

References