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centosCentOS ProjectCESA-2011:1377
HistoryOct 18, 2011 - 6:58 p.m.

postgresql security update

2011-10-1818:58:11
CentOS Project
lists.centos.org
66

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

0.003 Low

EPSS

Percentile

70.5%

CentOS Errata and Security Advisory CESA-2011:1377

PostgreSQL is an advanced object-relational database management system
(DBMS).

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. (CVE-2011-2483)

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:

http://www.postgresql.org/docs/8.4/static/release.html

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.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2011-November/080327.html
https://lists.centos.org/pipermail/centos-announce/2011-November/080328.html
https://lists.centos.org/pipermail/centos-announce/2011-October/080277.html
https://lists.centos.org/pipermail/centos-announce/2011-October/080278.html

Affected packages:
postgresql
postgresql-contrib
postgresql-devel
postgresql-docs
postgresql-jdbc
postgresql-libs
postgresql-pl
postgresql-python
postgresql-server
postgresql-tcl
postgresql-test

Upstream details at:
https://access.redhat.com/errata/RHSA-2011:1377

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

0.003 Low

EPSS

Percentile

70.5%