USN-287-1: Nagios vulnerability

29 May 2006

Nagios vulnerability

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Details

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 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.

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Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 5.10
  • nagios-common -
Ubuntu 5.04
  • nagios-common -

In general, a standard system update will make all the necessary changes.

References

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