USN-369-1: PostgreSQL vulnerabilities

Releases

• Ubuntu 6.06

Details

Michael Fuhr discovered an incorrect type check when handling unknown
literals. By attempting to coerce such a literal to the ANYARRAY type,
a local authenticated attacker could cause a server crash.

Josh Drake and Alvaro Herrera reported a crash when using aggregate
functions in UPDATE statements. A local authenticated attacker could
exploit this to crash the server backend. This update disables this
construct, since it is not very well defined and forbidden by the SQL
standard.

Sergey Koposov discovered a flaw in the duration logging. This could
cause a server crash under certain circumstances.

Please note that these flaws can usually not be exploited through web
and other applications that use a database and are exposed to
untrusted input, so these flaws do not pose a threat in usual setups.

Update instructions

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

Ubuntu 6.06

• postgresql-8.1 - 8.1.4-0ubuntu1.1

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

References

• http://www.postgresql.org/about/news.664