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=========================================================== Ubuntu Security Notice USN-282-1 May 08, 2006 nagios vulnerability CVE-2006-2162 =========================================================== A security issue affects the following Ubuntu releases: Ubuntu 5.04 (Hoary Hedgehog) Ubuntu 5.10 (Breezy Badger) The following packages are affected: nagios-common The problem can be corrected by upgrading the affected package to version 2:1.3-0+pre6ubuntu0.1 (for Ubuntu 5.04), or 2:1.3-cvs.20050402-4ubuntu3.1 (for Ubuntu 5.10). In general, a standard system upgrade is sufficient to effect the necessary changes. Details follow: The nagios CGI scripts did not sufficiently check the validity of the HTTP Content-Length attribute. By sending a specially crafted HTTP request with a negative Content-Length value to the Nagios server, a remote attacker could exploit this to execute arbitrary code with web server privileges. 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.