USN-834-1: PostgreSQL vulnerabilities

21 September 2009

PostgreSQL vulnerabilities

Releases

Details

It was discovered that PostgreSQL could be made to unload and reload an
already loaded module by using the LOAD command. A remote authenticated
attacker could exploit this to cause a denial of service. This issue did
not affect Ubuntu 6.06 LTS. (CVE-2009-3229)

Due to an incomplete fix for CVE-2007-6600, RESET ROLE and RESET SESSION
AUTHORIZATION operations were allowed inside security-definer functions. A
remote authenticated attacker could exploit this to escalate privileges
within PostgreSQL. (CVE-2009-3230)

It was discovered that PostgreSQL did not properly perform LDAP
authentication under certain circumstances. When configured to use LDAP
with anonymous binds, a remote attacker could bypass authentication by
supplying an empty password. This issue did not affect Ubuntu 6.06 LTS.
(CVE-2009-3231)

Update instructions

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

Ubuntu 9.04
Ubuntu 8.10
Ubuntu 8.04
Ubuntu 6.06

In general, a standard system upgrade is sufficient to effect the
necessary changes.