Published:
02 June 2004
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2004.0380 -- iDEFENSE Security Advisory 05.27.04
3Com OfficeConnect Remote 812 ADSL Router Authentication Bypass
Vulnerability
02 June 2004
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: 3Com OfficeConnect Remote 812 ADSL Router
Publisher: iDEFENSE
Impact: Inappropriate Access
Access Required: Remote
CVE Names: CAN-2004-0477
- --------------------------BEGIN INCLUDED TEXT--------------------
3Com OfficeConnect Remote 812 ADSL Router Authentication Bypass
Vulnerability
iDEFENSE Security Advisory 05.27.04
www.idefense.com/application/poi/display?id=106&type=vulnerabilities
May 27, 2004
I. BACKGROUND
The 3Com OfficeConnect Remote 812 ADSL Router is a standalone
bridge/router, with interfaces to a Local Area Network and an ADSL
interface to a Wide Area Network.
II. DESCRIPTION
Remote exploitation of an authentication bypass vulnerability in 3Com's
OfficeConnect Remote 812 ADSL Router could allow remote users to
arbitrarily manipulate network traffic.
By making multiple successive authorization attempts to connect to the
router, it is eventually possible to authenticate with any
username/password combination. While the root cause of the vulnerability
is not known, exploitation is trivial and does not require either a
known username or password.
III. ANALYSIS
Successful exploitation allows an attacker to perform any administrative
function that a legitimate administrator could perform.
More information about the 3Com OfficeConnect Remote 812 ADSL Router is
available at
http://www.3com.com/products/en_US/detail.jsp?tab=support&pathtype=suppo
rt&sku=3CP4144.
IV. DETECTION
iDEFENSE has confirmed that the 3Com OfficeConnect Remote 812 ADSL
Router with the last firmware patch is vulnerable
V. WORKAROUNDS
A previously given workaround for other issues with the HTTP interface
is available at the link shown. This shows how to configure the router
to prevent external access to the HTTP port.
http://support.3com.com/infodeli/tools/remote/ocradsl/http_filtering.pdf
VI. CVE INFORMATION
The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CAN-2004-0477 to this issue. This is a candidate for inclusion in
the CVE list (http://cve.mitre.org), which standardizes names for
security problems.
VII. DISCLOSURE TIMELINE
02/18/04 Exploit acquired by iDEFENSE
03/08/04 iDEFENSE Clients notified
03/11/04 Initial vendor notification - no response
03/30/04 Secondary vendor notification - no response
05/27/04 Public Disclosure
VIII. CREDIT
Rafel Ivgi is credited with this discovery.
Get paid for vulnerability research
http://www.idefense.com/poi/teams/vcp.jsp
IX. LEGAL NOTICES
Copyright (c) 2004 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.
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
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
iQCVAwUBQL08Nyh9+71yA2DNAQIM5wQAjJAxFpsCP2ECbvBjW0R7t/K4HoFvB3lF
mhYi5310DOUmn9jSVnEwbgN8sFytkUWIeznZiIXTlSReS7M4lbOnLqI0yOvFGK2C
hVZHHomenYfSngOJHx7BHTrVudzBXDsBOYDumNHGQACAEdgyR3/gw3qZOEIvpyLR
4o7UrS/cOqk=
=p2wS
-----END PGP SIGNATURE-----