Red Hat Security Advisory: postgresql security update Security Advisory secalert@redhat.com Red Hat Security Response Team RHSA-2012:1036 Final 1 1 2012-06-25T17:48:00Z Current version 2012-06-25T17:48:00Z 2012-06-25T17:48:00Z Red Hat rhsa-to-cvrf 1.0.1484 2012-06-25T18:06:02Z Updated postgresql packages that fix one security issue are now available for Red Hat Enterprise Linux 5. 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 from the CVE link in the References section. PostgreSQL is an advanced object-relational database management system (DBMS). A flaw was found in the way the crypt() password hashing function from the optional PostgreSQL pgcrypto contrib module performed password transformation when used with the DES algorithm. If the password string to be hashed contained the 0x80 byte value, the remainder of the string was ignored when calculating the hash, significantly reducing the password strength. This made brute-force guessing more efficient as the whole password was not required to gain access to protected resources. (CVE-2012-2143) Note: With this update, the rest of the string is properly included in the DES hash; therefore, any previously stored password values that are affected by this issue will no longer match. In such cases, it will be necessary for those stored password hashes to be updated. Upstream acknowledges Rubin Xu and Joseph Bonneau as the original reporters of this issue. All PostgreSQL users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. If the postgresql service is running, it will be automatically restarted after installing this update. Please see https://www.redhat.com/footer/terms-of-use.html Copyright © 2012 Red Hat, Inc. All rights reserved. Moderate https://rhn.redhat.com/errata/RHSA-2012-1036.html https://rhn.redhat.com/errata/RHSA-2012-1036.html https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/security/updates/classification/#moderate Red Hat Enterprise Linux Desktop (v. 5 client) Red Hat Enterprise Linux (v. 5 server) RHEL Desktop Workstation (v. 5 client) postgresql-8.1.23-5.el5_8.src.rpm postgresql-8.1.23-5.el5_8 as a component of Red Hat Enterprise Linux Desktop (v. 5 client) postgresql-8.1.23-5.el5_8 as a component of Red Hat Enterprise Linux (v. 5 server) postgresql-8.1.23-5.el5_8 as a component of RHEL Desktop Workstation (v. 5 client) A flaw was found in the way the crypt() password hashing function from the optional PostgreSQL pgcrypto contrib module performed password transformation when used with the DES algorithm. If the password string to be hashed contained the 0x80 byte value, the remainder of the string was ignored when calculating the hash, significantly reducing the password strength. This made brute-force guessing more efficient as the whole password was not required to gain access to protected resources. 2012-04-26T00:00:00Z 2012-05-30T00:00:00Z CVE-2012-2143 5Client-5.8.Z:postgresql-8.1.23-5.el5_8 5Client-Workstation-5.8.Z:postgresql-8.1.23-5.el5_8 5Server-5.8.Z:postgresql-8.1.23-5.el5_8 Moderate 4.0 AV:N/AC:H/Au:N/C:P/I:P/A:N 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 https://rhn.redhat.com/errata/RHSA-2012-1036.html https://www.redhat.com/security/data/cve/CVE-2012-2143.html CVE-2012-2143 https://bugzilla.redhat.com/show_bug.cgi?id=816956 bz#816956: CVE-2012-2143 BSD crypt(): DES encrypted password weakness Upstream acknowledges Rubin Xu and Joseph Bonneau as the original reporters of this issue.