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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.

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Guppy Request Header Injection Vulnerabilities

Vulnerability Assessment Summary Checks for request header injection vulnerabilities in Guppy Detailed Explanation for this Vulnerability Assessment Summary : The remote web server contains a PHP script that permits for arbitrary code execution and cross-site scripting attacks. Description : The remote host is running Guppy, a CMS written in PHP. The remote version of this software does not properly sanitize input to the Referer and User-Agent HTTP headers before using it in the 'error.php' script. A malicious user can exploit this flaw to inject arbitrary script and HTML code into a user's browser or, if PHP's 'magic_quotes_gpc' seting is disabled, PHP code to be executed on the remote host subject to the rights of the web server user id. See also : http://www.frsirt.com/english/advisories/2005/1639 Solution : Upgrade to Guppy version 4.5.4 or later. Network Security Threat Level: Medium / CVSS Base Score : 6 (AV:R/AC:H/Au:NR/C:P/A:P/I:P/B:N) Networks Security ID: 14753 Vulnerability Assessment Copyright: (C) 2005 Josh Zlatin-Amishav

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