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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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USN287-1 : nagios vulnerability

Vulnerability Assessment Summary nagios vulnerability Detailed Explanation for this Vulnerability Assessment Summary : These remote packages are missing security patches : - nagios-common - nagios-mysql - nagios-pgsql - nagios-text Description : The nagios CGI scripts did not sufficiently check the validity of the HTTP Content-Length attribute. By sending a specially crafted HTTP request with an invalidly large Content-Length value to the Nagios server, a remote attacker could exploit this to execute arbitrary code with web server rights. Please note that the Apache 2 web server already checks for valid Content-Length values, so installations using Apache 2 (the only web server officially supported in Ubuntu) are not vulnerable to this flaw. Solution : Upgrade to : - nagios-common-1.3-cvs.20050402-4ubuntu3.2 (Ubuntu 5.10) - nagios-mysql-1.3-cvs.20050402-4ubuntu3.2 (Ubuntu 5.10) - nagios-pgsql-1.3-cvs.20050402-4ubuntu3.2 (Ubuntu 5.10) - nagios-text-1.3-cvs.20050402-4ubuntu3.2 (Ubuntu 5.10) Network Security Threat Level: High Networks Security ID: Vulnerability Assessment Copyright: Ubuntu Security Notice (C) 2005 Canonical, Inc. / NASL script (C) 2005 Michel Arboi

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