Mandriva Linux Security Advisory 2009-079 – PostgreSQL before 8.3.7, 8.2.13, 8.1.17, 8.0.21, and 7.4.25 allows remote authenticated users to cause a denial of service (stack consumption and crash) by triggering a failure in the conversion of a localized error message to a client-specified encoding, as demonstrated using mismatched encoding conversion requests. This update provides a fix for this vulnerability.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/75983/MDVSA-2009-079.txt
Source: https://packetstormsecurity.com/files/75983/Mandriva-Linux-Security-Advisory-2009-079.html