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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
Checks for remote file inclusion vulnerability in PHP iCalendar
Detailed Explanation for this Vulnerability Assessment
The remote web server contains a PHP script that is prone to a remote
file include vulnerability.
The remote host appears to be running PHP iCalendar, a web-based iCal
file viewer / parser written in PHP.
The version of PHP icalendar installed on the remote host fails to
sanitize the 'phpicalendar' cookie before using it in 'index.php' to
include PHP code from a separate file. By leveraging this flaw, an
unauthenticated attacker may be able to view arbitrary files on the
remote host and execute arbitrary PHP code, possibly taken from
third-party hosts. Successful exploitation requires that PHP's
'magic_quotes' setting be disabled, that its 'permit_url_fopen' setting
be enabled, or that a possible hacker be able to place PHP files on the
See also :
Upgrade to a version of PHP iCalendar later than 2.0.1 when it becomes
Network Security Threat Level:
Medium / CVSS Base Score : 6
Networks Security ID: 15193
Vulnerability Assessment Copyright: This script is Copyright (C) 2005-2006 Tenable Network Security
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