USN-698-3: Nagios vulnerabilities

Ubuntu Security Notice USN-698-3

23rd December, 2008

nagios2 vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 8.04 LTS

Software description

  • nagios2


It was discovered that Nagios was vulnerable to a Cross-site request forgery
(CSRF) vulnerability. If an authenticated nagios user were tricked into
clicking a link on a specially crafted web page, an attacker could trigger
commands to be processed by Nagios and execute arbitrary programs. This
update alters Nagios behaviour by disabling submission of CMD_CHANGE commands.

It was discovered that Nagios did not properly parse commands submitted using
the web interface. An authenticated user could use a custom form or a browser
addon to bypass security restrictions and submit unauthorized commands.

Update instructions

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

Ubuntu 8.04 LTS:
nagios2 2.11-1ubuntu1.4

To update your system, please follow these instructions:

After a standard system upgrade you need to restart Nagios to effect
the necessary changes.


CVE-2008-5027, CVE-2008-5028