It was discovered that PostgreSQL did not properly handle certificates with NULL characters in the Common Name field of X.509 certificates. An attacker could exploit this to perform a man in the middle attack to view sensitive information or alter encrypted communications. (CVE-2009-4034)
It was discovered that PostgreSQL did not properly manage session-local state. A remote authenticated user could exploit this to escalate priviliges within PostgreSQL. (CVE-2009-4136)
3 January 2010
A security issue affects these releases of Ubuntu and its derivatives:
It was discovered that PostgreSQL did not properly handle certificates with NULL characters in the Common Name field of X.509 certificates. An attacker could exploit this to perform a man in the middle attack to view sensitive information or alter encrypted communications. (CVE-2009-4034)
It was discovered that PostgreSQL did not properly manage session-local state. A remote authenticated user could exploit this to escalate priviliges within PostgreSQL. (CVE-2009-4136)
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 upgrade is sufficient to effect the necessary changes.
Vulmon