[29456] in bugtraq
IRM 005: JWalk Application Server Version 3.2c9 Directory
daemon@ATHENA.MIT.EDU (IRM Advisories)
Tue Mar 25 12:22:58 2003
From: IRM Advisories <advisories@irmplc.com>
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Date: 25 Mar 2003 09:43:01 +0000
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IRM Security Advisory No. 005
JWALK application server version 3.2C9 Directory Traversal Vulnerability
Vulnerablity Type / Importance: Information Leakage / High
Problem discovered: November 28th 2002
Vendor contacted: November 28th 2002
Advisory published: March 20th 2003
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Abstract:
~~~~~~~~~
"JWalk is a complete development and deployment solution that includes poin=
t-and-click developer=FFs tools, specialized server software and self-updat=
ing thin client viewer software." - quote from Seagull software product doc=
umentation.
The Java-based product is supplied with a proprietary web server, and by us=
ing a browser it is possible to alter the URL to permit the contents of any=
file on the system to be viewed even those situated outside the web root. =
Using this method it is possible to view important configuration files incl=
uding the "sam._" file which contains the Windows password database.
Description:
~~~~~~~~~~~~
Recently during a penetration test IRM identified a serious security vulner=
ability with the Jwalk application web server version 3.2C9. It appears tha=
t by issuing a URL containing unicode characters representing "../" directo=
ry traversal is possible.=20
IRM used the following URL to obtain the Windows password file on the machi=
ne in question:
HTTP://<IP_address>/.%252e/.%252e/.%252e/winnt/repair/sam._=20
The server process appears to be running with sufficient privileges to read=
any file on the server (assuming the name and location of this file is kno=
wn).
Tested Versions:
~~~~~~ ~~~~~~~~~
JWALK application server version 3.2C9=20
Tested Operating Systems:
~~~~~~ ~~~~~~~~~ ~~~~~~~~
Microsoft Windows NT 4.0
Vendor & Patch Information:
~~~~~~ ~ ~~~~~ ~~~~~~~~~~~~
The vendor of this product, Seagull software, was contacted via email using=
the address "info-uk@seagull.nl" on 28th November 2002. When no reply was =
received to this email, another email was sent on 7th January 2003 to the s=
ame address, and copied=20
to "customercare@seagull.nl" and "maintenance@seagull.nl". The vendor telep=
honed IRM to confirm that it was indeed a security vulnerability and starte=
d work on a patch to resolve the issue. Subsequently, the vender explained =
that the fix would be available in the next service release of JWalk, 3.3c4=
, scheduled for delivery on Feb 10, 2003.
Workarounds:
~~~~~~~~~~~~
A workaround involves using different vendor's web server to serve the Jwal=
k application
Credits:
~~~~~~~~
Research & Advisory: Andy Davis=20
Disclaimer:
~~~~~~~~~~~
All information in this advisory is provided on an 'as is'
basis in the hope that it will be useful. Information Risk Management
Plc is not responsible for any risks or occurrences caused
by the application of this information.
A copy of this advisory may be found at
http://www.irmplc.com/advisories
The PGP key used to sign IRM advisories can be obtained from the above
URL, or from keyserver.net and its mirrors.
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Information Risk Management Plc.=20
http://www.irmplc.com, info@irmplc.com
22 Buckingham Gate=20
London=20
SW1E 6LB
+44 (0)207 808 6420
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