[scip_Advisory 2351] Kyberna AG ky2help various form fields SQL Injection
Kyberna AG ky2help various form fields SQL Injection
scip AG Vulnerability ID 2351 (07/04/2005)
http://www.scip.ch/cgi-bin/smss/showadvf.pl?id=2351
I. INTRODUCTION
Kyberna ky2help is a commercial solution for a web-based ticketing and
support system. Users are able to send tickets and those are handled by
the pool of registred support people.
More Information are available on the official Kyberna AG product web
site at the following URLs:
http://www.kyberna.com
http://www.ky2help.com
II. DESCRIPTION
Marc Ruef found an SQL injection vulnerability in ky2help. Some
textboxes are vulnerable to such a classical attack using a single hyphen.
As usual in SQL injection attacks manipulation of the data base is
possible. Also further privilege escalation (e.g. setting up a new user
with administrative privileges in the data base or reading files into
accessable data fields) may be possible. [1]
III. EXPLOITATION
Authenticated users may be able to exploit this vulnerability by
accessing the "Meine Links" (engl. "My Links") and using the single
hyphen as input. So no further exploit is required for a simple
proof-of-concept.
A plugin for our open-source exploiting framework "Attack Tool Kit"
(ATK) will be published in the near future. [2]
IV. IMPACT
It is important to remark that just authenticated and legitimate users
are able to launch the attack. The login screen and the provided user
fields in there are not affected. Because just authenticated and
legitimate users are able to access vulnerable parts of the solution,
the impact is not on the highest level.
But it remains a serious problem for every company that tries to run a
secure environment without the possibility of gaining elevated privileges.
V. DETECTION
Detection of web based attacks requires a specialiced web proxy and/or
intrusion detection system. Patterns for such a detection are available
and easy to implement.
VI. WORKAROUND
Companies running ky2help in high security environments are requested to
restrict the access to vulnerable systems. Only trusted users should be
able to login in such environments.
VII. VENDOR RESPONSE
Kyberna AG has been informed on an early stage on 11/01/2005 via email
to info-at-kyberna.com
Kyberna AG released a fixed version of the software
VIII. SOURCES
scip AG - Security Consulting Information Process (german)
http://www.scip.ch
scip AG Vulnerability Database (german)
http://www.scip.ch/cgi-bin/smss/showadvf.pl?id=2351
computec.ch document data base (german)
http://www.computec.ch/download.php
IX. DISCLOSURE TIMELINE
10/27/05 Identification of the flaw
11/01/05 Reporting the flaw to Kyberna AG via email
04/07/06 Public advisory
IX. CREDITS
The vulnerability was discovered by Marc Ruef.
Marc Ruef, scip AG, Zuerich, Switzerland
maru-at-scip.ch
http://www.scip.ch
A1. BIBLIOGRAPHY
[1] http://www.computec.ch/download.php?list.26 (german)
[2] http://www.computec.ch/projekte/atk/
A2. LEGAL NOTICES
Copyright (c) 2005-2006 scip AG, Switzerland.
Permission is granted for the re-distribution of this alert. It may not
be edited in any way without permission of scip AG.
The information in the advisory is believed to be accurate at the time
of publishing based on currently available information. There are no
warranties with regard to this information. Neither the
author nor the publisher accepts any liability for any direct, indirect
or consequential loss or damage from use of or reliance on this advisory.