Hash: SHA1

             AUSCERT External Security Bulletin Redistribution

  Novell Groupwise GWPOA HTTP Request Remote Code Execution Vulnerability
                             10 November 2010


        AusCERT Security Bulletin Summary

Product:           Novell Groupwise
Publisher:         Zero Day Initiative
Operating System:  Windows
                   Linux variants
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution:        Patch/Upgrade

Original Bulletin: 

- --------------------------BEGIN INCLUDED TEXT--------------------

Novell Groupwise GWPOA HTTP Request Remote Code Execution Vulnerability
ZDI-10-247: November 9th, 2010

CVSS Score

      10, (AV:N/AC:L/Au:N/C:C/I:C/A:C) 

Affected Vendors


Affected Products


TippingPoint IPS Customer Protection
TippingPoint IPS customers are protected against this vulnerability by Digital 
Vaccine protection filter ID 10328. For further product information on the 
TippingPoint IPS:


Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on 
vulnerable installations of Novell Groupwise. Authentication is not required to 
exploit this vulnerability.

The specific flaw exists in a function responsible for assembling an HTTP 
response. The following modules implement this functionality: gwpoa.exe, 
gwmta.exe, gwia.exe. When responding to an HTTP request sent to TCP port 7101 
or 7100 or in the case of gwia.exe the user configured "Message Transfer Port", 
the process uses the client-specified "Host: " header to create an HTTP 301 
redirection message. Within this code a local stack buffer is used to store the 
redirect location and can be overflown with a sufficiently long header value. 
A remote attacker can exploit this vulnerability to execute arbitrary code 
under the context of the SYSTEM user.

Vendor Response
Novell states:

Linux - http://download.novell.com/Download?buildid=04oMMaiI9nI~
NetWare/Windows - http://download.novell.com/Download?buildid=aq06Eoy7rf4~

The HTTP interfaces for the GroupWise agents (Message Transfer Agent, Post 
Office Agent, Internet Agent, WebAccess Agent, Monitor Agent) are vulnerable 
to an exploit that could allow a remote attacker to execute arbitrary code on 
vulnerable installations of Novell Groupwise. Authentication is not required to 
exploit this vulnerability.

Affected versions:
GroupWise 8.0x, 8.01x, 8.02. Previous versions of GroupWise are likely also 
vulnerable but are no longer supported. Customers on earlier versions of 
GroupWise should, at a minimum, upgrade their GroupWise systems to version 
8.02HP (or disable the GroupWise Agents' HTTP interfaces) in order to secure 
their system.
This vulnerability was discovered and reported by Anonymous working with 
TippingPoint's Zero Day Initiative (http://www.zerodayinitiative.com), 
Novell bug 627942, CVE number pending
Related TID: http://www.novell.com/support/search.do?usemicrosite=true&searchString=7007159

Disclosure Timeline

      2010-06-10 - Vulnerability reported to vendor
      2010-11-09 - Coordinated public release of advisory


This vulnerability was discovered by:


- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:


Australian Computer Emergency Response Team
The University of Queensland
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
Comment: http://www.auscert.org.au/render.html?it=1967