1.214. postgresql

Updated postgresql packages that fix one security issue are now available for Red Hat Enterprise Linux 4, 5, and 6.
The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) associated with each description below.
PostgreSQL is an advanced object-relational database management system (DBMS).

Security Fix

CVE-2011-2483
A signedness issue was found in the way the crypt() function in the PostgreSQL pgcrypto module handled 8-bit characters in passwords when using Blowfish hashing. Up to three characters immediately preceding a non-ASCII character (one with the high bit set) had no effect on the hash result, thus shortening the effective password length. This made brute-force guessing more efficient as several different passwords were hashed to the same value.
Note: Due to the CVE-2011-2483 fix, after installing this update some users may not be able to log in to applications that store user passwords, hashed with Blowfish using the PostgreSQL crypt() function, in a back-end PostgreSQL database. Unsafe processing can be re-enabled for specific passwords (allowing affected users to log in) by changing their hash prefix to "$2x$".
For Red Hat Enterprise Linux 6, the updated postgresql packages upgrade PostgreSQL to version 8.4.9. Refer to the PostgreSQL Release Notes for a full list of changes.
For Red Hat Enterprise Linux 4 and 5, the updated postgresql packages contain a backported patch.
All PostgreSQL users are advised to upgrade to these updated packages, which correct this issue. If the postgresql service is running, it will be automatically restarted after installing this update.
Updated postgresql packages that fix a bug are now available for Red Hat Enterprise Linux 6.
PostgreSQL is an advanced object-relational database management system (DBMS) that supports most SQL constructs.
Bug Fix
BZ#694249
Previously, PL/pgSQL functions could have failed with an error if they used composite types as their arguments or result types. This happened if a column was dropped in the table underlying the composite type. This update adapts the source code that handles these situations so that such functions work correctly.
All users of postgresql are advised to upgrade to these updated packages, which resolve this bug.