Moderate: postgresql and postgresql84 security update
Security Advisory: Moderate
Updated postgresql84 and postgresql packages that fix three security issues
are now available for Red Hat Enterprise Linux 5 and 6 respectively.
The Red Hat Security Response Team has rated this update as having moderate
security impact. Common Vulnerability Scoring System (CVSS) base scores,
which give detailed severity ratings, are available for each vulnerability
from the CVE links in the References section.
PostgreSQL is an advanced object-relational database management system
(DBMS).
The pg_dump utility inserted object names literally into comments in the
SQL script it produces. An unprivileged database user could create an
object whose name includes a newline followed by an SQL command. This SQL
command might then be executed by a privileged user during later restore of
the backup dump, allowing privilege escalation. (CVE-2012-0868)
When configured to do SSL certificate verification, PostgreSQL only checked
the first 31 characters of the certificate's Common Name field. Depending
on the configuration, this could allow an attacker to impersonate a server
or a client using a certificate from a trusted Certificate Authority issued
for a different name. (CVE-2012-0867)
CREATE TRIGGER did not do a permissions check on the trigger function to
be called. This could possibly allow an authenticated database user to
call a privileged trigger function on data of their choosing.
(CVE-2012-0866)
These updated packages upgrade PostgreSQL to version 8.4.11, which fixes
these issues as well as several data-corruption issues and lesser
non-security issues. Refer to the PostgreSQL Release Notes for a full list
of changes:
http://www.postgresql.org/docs/8.4/static/release.html
All PostgreSQL users are advised to upgrade to these updated packages,
which correct these issues. If the postgresql service is running, it will
be automatically restarted after installing this update.
Before applying this update, make sure all previously-released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/knowledge/articles/11258
Vulmon