PostgreSQL could allow unintended access to files over the network when using the XML2 extension.
Peter Eisentraut discovered that the XSLT functionality in the optional XML2 extension would allow unprivileged database users to both read and write data with the privileges of the database server. (CVE-2012-3488)
21 August 2012
A security issue affects these releases of Ubuntu and its derivatives:
PostgreSQL could allow unintended access to files over the network when using the XML2 extension.
Peter Eisentraut discovered that the XSLT functionality in the optional XML2 extension would allow unprivileged database users to both read and write data with the privileges of the database server. (CVE-2012-3488)
Noah Misch and Tom Lane discovered that the XML functionality in the optional XML2 extension would allow unprivileged database users to read data with the privileges of the database server. (CVE-2012-3489)
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.
This update uses a new upstream release, which includes additional bug fixes. Due to upstream security policies, this update removes the ability of xslt_process() to fetch documents or stylesheets from external URLs. Please see http://www.postgresql.org/about/news/1407/ for more information. In general, a standard system update will make all the necessary changes.
Vulmon