Format string vulnerability in TraceEvent function for ntop before 2.1 allows remote attackers to execute arbitrary code by causing format strings to be injected into calls to the syslog function, via (1) an HTTP GET request, (2) a user name in HTTP authentication, or (3) a password in HTTP authentication.
http://www.securityfocus.com/bid/4225
http://www.iss.net/security_center/static/8347.php
http://online.securityfocus.com/archive/1/259642
http://marc.info/?l=bugtraq&m=101908224609740&w=2
http://marc.info/?l=bugtraq&m=101856541322245&w=2
http://marc.info/?l=bugtraq&m=101854261030453&w=2
http://listmanager.unipi.it/pipermail/ntop-dev/2002-February/000489.html
http://archives.neohapsis.com/archives/vulnwatch/2002-q1/0056.html