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Buffer overflow in CGI scripts in Nagios 1.x before 1.4 and 2.x before 2.3 allows remote attackers to execute arbitrary code via a negative content length (Content-Length) HTTP header. It should be noted that apache 2 will not allow this condition to happen. https://sourceforge.net/mailarchive/forum.php?thread_id=10297806&forum_id=7890 http://www.nagios.org/development/changelog.php
Thanks for the heads up. I've sent the 2.3 update to buildsys and it should be available soon.