RHEL 5 / 6 : php53 and php (RHSA-2012:0019)

This script is Copyright (C) 2012-2017 Tenable Network Security, Inc.

Synopsis :

The remote Red Hat host is missing one or more security updates.

Description :

Updated php53 and php packages that fix two 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.

PHP is an HTML-embedded scripting language commonly used with the
Apache HTTP Server.

It was found that the hashing routine used by PHP arrays was
susceptible to predictable hash collisions. If an HTTP POST request to
a PHP application contained many parameters whose names map to the
same hash value, a large amount of CPU time would be consumed. This
flaw has been mitigated by adding a new configuration directive,
max_input_vars, that limits the maximum number of parameters processed
per request. By default, max_input_vars is set to 1000.

An integer overflow flaw was found in the PHP exif extension. On
32-bit systems, a specially crafted image file could cause the PHP
interpreter to crash or disclose portions of its memory when a PHP
script tries to extract Exchangeable image file format (Exif) metadata
from the image file. (CVE-2011-4566)

Red Hat would like to thank oCERT for reporting CVE-2011-4885. oCERT
acknowledges Julian Walde and Alexander Klink as the original
reporters of CVE-2011-4885.

All php53 and php users should upgrade to these updated packages,
which contain backported patches to resolve these issues. After
installing the updated packages, the httpd daemon must be restarted
for the update to take effect.

See also :


Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 6.4
CVSS Temporal Score : 5.0
Public Exploit Available : true

Family: Red Hat Local Security Checks

Nessus Plugin ID: 57494 ()

Bugtraq ID: 50907

CVE ID: CVE-2011-4566

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