Ubuntu Security Notice USN-282-1
8th May, 2006
nagios vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 5.10
- Ubuntu 5.04
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 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.
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 5.10:
- nagios-common
- Ubuntu 5.04:
- nagios-common
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
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