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Category:   Application (Generic)  >   Novell GroupWise Vendors:   Novell
Novell GroupWise Stack Overflow in Processing IMG SRC Tag Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1019101
SecurityTracker URL:  http://securitytracker.com/id/1019101
CVE Reference:   CVE-2007-6435   (Links to External Site)
Updated:  Dec 20 2007
Original Entry Date:  Dec 14 2007
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Exploit Included:  Yes  
Version(s): 6.5.6
Description:   A vulnerability was reported in Novell GroupWise. A remote user can cause arbitrary code to be executed on the target user's system.

A remote user can create a specially crafted e-mail message that, when replied to or forwarded by the target user, will trigger a stack overflow and execute arbitrary code on the target user's system. The code will run with the privileges of the target user.

A specially crafted IMG tag SRC parameter can trigger the overflow.

Some demonstration exploit modules for Metasploit are available at:

http://www.infobyte.com.ar/developments.html

The vendor was notified on December 6, 2007.

Francisco Amato of Infobyte Security Research reported this vulnerability.

Impact:   A remote user can create an email that, when replied to or forwarded by the target user, will execute arbitrary code on the target user's system.
Solution:   The vendor has issued a fixed version (6.5.7).
Vendor URL:  www.novell.com/ (Links to External Site)
Cause:   Boundary error
Underlying OS:  Windows (Any)

Message History:   None.


 Source Message Contents

Subject:  [ISR] - Novell Groupwise client remote stack overflow silently patched.

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

|| [ISR]
|| || Infobyte Security Research
|| www.infobyte.com.ar
|| 12.14.2007
||


.:: SUMMARY

Novell GroupWise Client Remote Stack Overflow

Version: GroupWise 6.5.6, It is suspected that all previous versions of
Groupwise Client
are vulnerable.

.:: BACKGROUND

GroupWise Client is Novell's premier Intranet/Internet GroupWare solution
for platform Windows.

More info:    http://www.novell.com

.:: VULNERABILITY VIDEO DEMO

http://www.infobyte.com.ar/demo/ISR_groupwise.html

.:: POC

Metasploit 2.7 and 3.0 modules
http://www.infobyte.com.ar/developments.html

.:: DESCRIPTION

This issue is due to a failure of the application to securely parse the
"SRC" parameter of tag "IMG" (image).

To reproduce it the victim has to receive specially created email and reply
o
forward it.
The option of html preview must actived

Use the following html code to reproduce the issue:
<img src="AAAAAAAAAAA...." x 1200 />

.:: IMPACT

The vulnerability permit code executation.

.:: VENDOR RESPONSE

The vulnerability was silently patched in the version => 6.5.7

.:: DISCLOSURE TIMELINE

12/06/2007  Initial vendor notification
12/07/2007  Initial vendor response notify research
12/11/2007  Coordinated public disclosure

.:: CREDIT

Francisco Amato is credited with discovering this vulnerability.
famato][at][infobyte][dot][com][dot][ar

.:: LEGAL NOTICES

Copyright (c) 2007 by [ISR] Infobyte Security Research.
Permission to redistribute this alert electronically is granted as long as
it is not
edited in any way unless authorized by Infobyte Security Research Response.
Reprinting the whole or part of this alert in any medium other than
electronically
requires permission from infobyte com ar

Disclaimer
The information in the advisory is believed to be accurate at the time of
publishing
based on currently available information. Use of the information
constitutes acceptance
for use in an AS IS condition. 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 arising from use of, or reliance on, this
information.

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