copyright | disclaimer | privacy | contact  
Australia's Leading Computer Emergency Response Team
Search this site

On this site

 > About AusCERT
 > Membership
 > Contact Us
 > PKI Services
 > Publications
 > Sec. Bulletins
 > Conferences
 > News & Media
 > Services
 > Web Log
 > Site Map
 > Site Help
 > Member login


ESB-2009.1360 - [Netware] NFS Portmapper & RPC Module: Execute arbitrary code/commands - Remote/unauthenticated

Date: 01 October 2009

Click here for printable version
Click here for PGP verifiable version
Hash: SHA1

             AUSCERT External Security Bulletin Redistribution

         ZDI-09-067: Novell NetWare NFS Portmapper and RPC Module
                       Stack Overflow Vulnerability
                              1 October 2009


        AusCERT Security Bulletin Summary

Product:           NFS Portmapper
                   RPC Module
Publisher:         Zero Day Initiative
Operating System:  Netware
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution:        Patch/Upgrade

Original Bulletin:

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

Novell NetWare NFS Portmapper and RPC Module Stack Overflow Vulnerability
ZDI-09-067: September 30th, 2009

Affected Vendors


Affected Products


TippingPoint IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by 
Digital Vaccine protection filter ID 8280. For further product 
information on the TippingPoint IPS: 

Vulnerability Details

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

The specific flaw exists within the processing of CALLIT RPC calls. The 
vulnerable daemon explicitly trusts a length field when receiving data 
which is later copied into a stack buffer, potentially resulting in a stack 
overflow. Successful exploitation of this vulnerability can lead to remote 
code execution under the context of the daemon.

Vendor Response

Novell has issued an update to correct this vulnerability. More details can 
be found at:

Disclosure Timeline

      2009-06-23 - Vulnerability reported to vendor
      2009-09-30 - Coordinated public release of advisory


This vulnerability was discovered by:

      Nick DeBaggis

- --------------------------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
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:

If you believe that your computer system has been compromised or attacked in 
any way, we encourage you to let us know by completing the secure National IT 
Incident Reporting Form at:

Australian Computer Emergency Response Team
The University of Queensland
Qld 4072

Internet Email:
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.