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If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important. If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.
Vulnerability Assessment Details
Check for the version of the php packages
Detailed Explanation for this Vulnerability Assessment
Updated PHP packages that fix various security issues are now available.
This update has been rated as having moderate security impact by the Red
Hat Security Response Team.
PHP is an HTML-embedded scripting language commonly used with the Apache
HTTP Web server.
A bug was found in the way PHP processes IFF and JPEG images. It is
possible to cause PHP to consume CPU resources for a short period of time
by supplying a carefully crafted IFF or JPEG image. The Common
Vulnerabilities and Exposures project (cve.mitre.org) has assigned the
names CVE-2005-0524 and CVE-2005-0525 to these issues.
A buffer overflow bug was also found in the way PHP processes EXIF image
headers. It is possible for a possible hacker to construct an image file in such
a way it could execute arbitrary instructions when processed by PHP. The
Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned
the name CVE-2005-1042 to this issue.
A denial of service bug was found in the way PHP processes EXIF image
headers. It is possible for a possible hacker to cause PHP to enter an infinite
loop for a short period of time by supplying a carefully crafted image file
to PHP for processing. The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the name CVE-2005-1043 to this issue.
Several bug fixes are also included in this update:
- some performance issues in the unserialize() function have been fixed
- the behaviour of the interpreter when handling integer overflow during
conversion of a floating variable to an integer has been reverted to match
the behaviour used upstream
the integer will now be wrapped rather than
- a fix for the virtual() function in the Apache httpd module which would
flush the response prematurely
- the hard-coded default "safe mode" setting is now "disabled" rather than
to match the default /etc/php.ini setting
- in the curl extension, safe mode was not enforced for 'file:///' URL
Users of PHP should upgrade to these updated packages, which contain
backported fixes for these issues.
Solution : http://rhn.redhat.com/errata/RHSA-2005-406.html
Network Security Threat Level: High
Networks Security ID:
Vulnerability Assessment Copyright: This script is Copyright (C) 2005 Tenable Network Security
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