-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                          ESB-2006.0056 -- [Win]
EMC Legato Networker nsrd.exe and nsrexed.exe Heap Overflow Vulnerabilities
                              18 January 2006

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           EMC Legato NetWorker nsrd.exe
                   EMC Legato NetWorker nsrexecd.exe
Publisher:         iDEFENSE
Operating System:  Windows Server 2003
                   Windows XP
                   Windows 2000
                   Windows NT
Impact:            Execute Arbitrary Code/Commands
Access:            Remote/Unauthenticated
CVE Names:         CAN-2005-3658

Original Bulletin: 
http://www.idefense.com/intelligence/vulnerabilities/display.php?id=373
http://www.idefense.com/intelligence/vulnerabilities/display.php?id=374

Comment: The following bulletin contains two security advisories relating
         to vulnerabilities in both EMC Legato Networker clients and
         servers running on Windows platforms.

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

EMC Legato Networker nsrd.exe Heap Overflow Vulnerability

iDefense Security Advisory 01.17.06
http://www.idefense.com/intelligence/vulnerabilities/display.php?id=373
January 17, 2006

I. BACKGROUND

EMC Legato NetWorker is a cross-platform backup and recovery
application.

II. DESCRIPTION

Remote exploitation of a heap overflow vulnerability in EMC Corp.'s
Legato Networker allows attackers to execute arbitrary code on Windows
platforms.

The vulnerability specifically exists due to improper handling of
malformed RPC requests to RPC program number 390109. When such a request
is sent by an attacker, it is possible to overwrite portions of heap
memory, thus leading to arbitrary code execution.

III. ANALYSIS

Successful exploitation allows a remote attacker to gain access to a
targeted machine. As nsrd.exe is installed on backup client machines
and server machines, an attacker may rapidly compromise a network using
this vulnerability.

IV. DETECTION

iDefense has confirmed this vulnerability in Networker 7.2 build 172.
All previous versions are suspected vulnerable.

V. WORKAROUND

iDefense is currently unaware of any workarounds for this issue.

VI. VENDOR RESPONSE

"Complete resolutions to the vulnerabilities are available today in
NetWorker 7.1.4 and 7.3. EMC has created a hot-fix to protect against
vulnerabilities for 7.2.1 customers.  No fixes are planned for previous
NetWorker releases."
 
"These remedies are available for download at:"

  http://www.legato.com/support/websupport/product_alerts/011606_NW.htm

VII. CVE INFORMATION

The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CAN-2005-3658 to this issue. This is a candidate for inclusion in
the CVE list (http://cve.mitre.org), which standardizes names for
security problems.

VIII. DISCLOSURE TIMELINE

11/17/2005 Initial vendor notification
11/17/2005 Initial vendor response
01/17/2006 Coordinated public disclosure

IX. CREDIT

Jo Goossens is credited with the discovery of this vulnerability.

Get paid for vulnerability research
http://www.idefense.com/poi/teams/vcp.jsp

Free tools, research and upcoming events
http://labs.idefense.com

X. LEGAL NOTICES

Copyright © 2006 iDefense, Inc.

Permission is granted for the redistribution of this alert
electronically. It may not be edited in any way without the express
written consent of iDefense. If you wish to reprint the whole or any
part of this alert in any other medium other than electronically, please
email customerservice@idefense.com for permission.

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.



EMC Legato Networker nsrexecd.exe Heap Overflow Vulnerability

iDefense Security Advisory 01.17.06
http://www.idefense.com/intelligence/vulnerabilities/display.php?id=374
January 17, 2006

I. BACKGROUND

EMC Legato NetWorker is a cross-platform backup and recovery
application.

II. DESCRIPTION

Remote exploitation of a heap overflow vulnerability in EMC Corp.'s
Legato Networker allows attackers to execute arbitary code on windows
platforms.

The vulnerability specifically exists due to improper handling of
malformed RPC requests to RPC program number 390113. When such a request
is sent by an attacker, it is possible to overwrite portions of heap
memory, thus leading to arbitrary code execution by way of a function
pointer overwrite. If an attacker can populate memory so that his data
is in a predictable location, arbitrary code execution is possible. It
is possible to populate memory in several ways, including by utilizing
memory leaks.

III. ANALYSIS

Successful exploitation allows a remote attacker to gain access to a
targetted machine. As nsrd.exe is installed on backup client machines
as well as server machines, an attacker may rapidly compromise a
network using this vulnerability.

IV. DETECTION

iDefense has confirmed this vulnerability in Networker 7.2 build 172.
All previous versions are suspected vulnerable.

V. WORKAROUND

iDefense is currently unaware of any workarounds for this issue.

VI. VENDOR RESPONSE

"Complete resolutions to the vulnerabilities are available today in
NetWorker 7.1.4 and 7.3.  EMC has created a hot-fix to protect against
vulnerabilities for 7.2.1 customers.  No fixes are planned for previous
NetWorker releases."
 
"These remedies are available for download at:"

http://www.legato.com/support/websupport/product_alerts/011606_NW.htm

VII. CVE INFORMATION

The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CAN-2005-3658 to this issue. This is a candidate for inclusion in
the CVE list (http://cve.mitre.org), which standardizes names for
security problems.

VIII. DISCLOSURE TIMELINE

11/17/2005 Initial vendor notification
11/17/2005 Initial vendor response
01/17/2006 Coordinated public disclosure

IX. CREDIT

Jo Goossens is credited with the discovery of this vulnerability.

Get paid for vulnerability research
http://www.idefense.com/poi/teams/vcp.jsp

Free tools, research and upcoming events
http://labs.idefense.com

X. LEGAL NOTICES

Copyright © 2006 iDefense, Inc.

Permission is granted for the redistribution of this alert
electronically. It may not be edited in any way without the express
written consent of iDefense. If you wish to reprint the whole or any
part of this alert in any other medium other than electronically, please
email customerservice@idefense.com for permission.

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.

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

        http://www.auscert.org.au/render.html?cid=1980

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:

        http://www.auscert.org.au/render.html?it=3192

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
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.
===========================================================================

-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967

iQCVAwUBQ8242yh9+71yA2DNAQI0iQQAk8IZmg3Xga3rPKmqLV3gTwXwHoIktlBU
ILKY9g072N5WXOh/TNmppqAi6wr78/sVq5ihAnIH+/vZ4X3eHpc4VEIi1H1v28JW
Ua/D9iuR8lx4uEsIkYpRuE364bJ+szSbfHCylfeUK2tajOQAn9VnVKnTFkt+VTVH
Ph8H0ecSwLU=
=QaSy
-----END PGP SIGNATURE-----