Akio Ishida discovered that the SET SESSION AUTHORIZATION command did not properly verify the validity of its argument. An authenticated PostgreSQL user could exploit this to crash the server.
However, this does not affect the official binary Ubuntu packages. The crash can only be triggered if the source package is rebuilt with assertions enabled (which is not the case in the official binary packages).
27 February 2006
A security issue affects these releases of Ubuntu and its derivatives:
Akio Ishida discovered that the SET SESSION AUTHORIZATION command did not properly verify the validity of its argument. An authenticated PostgreSQL user could exploit this to crash the server.
However, this does not affect the official binary Ubuntu packages. The crash can only be triggered if the source package is rebuilt with assertions enabled (which is not the case in the official binary packages).
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.
Vulmon