USN-876-1: PostgreSQL vulnerabilities

Releases

• Ubuntu 9.10
• Ubuntu 9.04
• Ubuntu 8.10
• Ubuntu 8.04
• Ubuntu 6.06

Packages

• postgresql-8.1 -
• postgresql-8.3 -
• postgresql-8.4 -

Details

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 machine-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)

Update instructions

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

Ubuntu 9.10

• postgresql-8.4 - 8.4.2-0ubuntu9.10

Ubuntu 9.04

• postgresql-8.3 - 8.3.9-0ubuntu9.04

Ubuntu 8.10

• postgresql-8.3 - 8.3.9-0ubuntu8.10

Ubuntu 8.04

• postgresql-8.3 - 8.3.9-0ubuntu8.04

Ubuntu 6.06

• postgresql-8.1 - 8.1.19-0ubuntu0.6.06

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

References

• CVE-2009-4034
• CVE-2009-4136