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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.
PHP is an HTML-embedded scripting language commonly used with the Apache
Stefan Esser discovered a flaw when memory_limit configuration setting is
enabled in versions of PHP 4 before 4.3.8. If a remote attacker could
force the PHP interpreter to allocate more memory than the memory_limit
setting before script execution begins, then the attacker may be
able to supply the contents of a PHP hash table remotely. This hash table
could then be used to execute arbitrary code as the 'apache' user. The
Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned
the name CVE-2004-0594 to this issue.
This issue may be exploitable if using the default PHP configuration with
the "register_globals" setting of "On". The Apache memory exhaustion bug,
fixed in a previous update to Red Hat Enterprise Linux 3, may also permit
this PHP issue to be exploited
this Apache bug does not affect Red Hat
Enterprise Linux 2.1.
Stefan Esser discovered a flaw in the strip_tags function in versions of
PHP before 4.3.8. The strip_tags function is commonly used by PHP scripts
to prevent Cross-Site-Scripting attacks by removing HTML tags from
user-supplied form data. By embedding NUL bytes into form data, HTML tags
can in some cases be passed intact through the strip_tags function, which
may permit a Cross-Site-Scripting attack. The Common Vulnerabilities and
Exposures project (cve.mitre.org) has assigned the name CVE-2004-0595 to
All users of PHP are advised to upgrade to these updated packages, which
contain backported patches that address these issues.
Solution : http://rhn.redhat.com/errata/RHSA-2004-395.html
Network Security Threat Level: High
Networks Security ID:
Vulnerability Assessment Copyright: This script is Copyright (C) 2004 Tenable Network Security
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