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Cisco Security Advisory: Cisco Content Service Switch 11000 Series Web
Management Vulnerability
Revision 2.0
For Public Re-release 2002 August 14 at 1500 UTC
For Public Release 2001 May 31 at 1500 UTC
----------------------------------------------------------------------
Contents
Summary
Affected Products
Details
Impact
Software Versions and Fixes
Obtaining Fixed Software
Workarounds
Exploitation and Public Announcements
Status of This Notice
Distribution
Revision History
Cisco Security Procedures
----------------------------------------------------------------------
Summary
The Cisco Content Service Switch (CSS) 11000 series switches do not
enforce the correct restrictions for accessing the web management URL.
After successful authentication users are redirected to the web management
URL. If users directly connect to the redirected URL they are granted
access to the web management interface without having to reauthenticate.
This vulnerability results in users gaining access to secure data.
This vulnerability is documented as Cisco bug IDs CSCdu20931 and
CSCdw08549.
This advisory will be posted at
http://www.cisco.com/warp/public/707/arrowpoint-webmgmt-vuln-pub.shtml.
This advisory is being re-released because the vulnerability was not
completely fixed previously. Users are still vulnerable and should apply
the workarounds in the Workarounds section to mitigate the affects of the
vulnerability.
Affected Products
The CSS 11000 series switches (formerly known as Arrowpoint), consist of
the CSS 11050, CSS 11150 and CSS 11800 hardware platforms. They run the
Cisco WebNS software.
All CSS 11000 series switches running any WebNS software revision are
affected by this vulnerability.
No other Cisco product is currently known to be affected by this
vulnerability.
Details
If users bookmark the URL they are redirected to after a successful
authentication on the CSS 11000 series switches, they can later access the
web management interface without having to reauthenticate.
This advisory is being re-released because the vulnerability was not
completely fixed previously. Users are still vulnerable and should apply
the workarounds in the Workarounds section to mitigate the affects of the
vulnerability.
This vulnerability is documented as Cisco bug IDs CSCdu20931 and
CSCdw08549, which requires a CCO account to view.
Impact
A user can gain access to the web management interface without being
authenticated on the CSS 11000 series switch. This vulnerability can be
minimized by restricting http access to the CSS 11000 series switch.
Software Versions and Fixes
This vulnerability is fixed in the Cisco WebNS software which, according
to its current schedule, will be available for download in late December
2002 and early January 2003.
Obtaining Fixed Software
Cisco will be offering free software upgrades to remedy this vulnerability
for all affected customers. Customers with service contracts may upgrade
to any software release containing the feature sets they have purchased.
Customers with contracts should obtain upgraded software through their
regular update channels. For most customers, this means that upgrades
should be obtained via the Software Center on Cisco's Worldwide Web site
at http://www.cisco.com.
Customers without contracts should get their upgrades by contacting the
Cisco Technical Assistance Center (TAC). TAC contacts are as follows:
* +1 800 553 2447 (toll free from within North America)
* +1 408 526 7209 (toll call from anywhere in the world)
* e-mail: tacat_private
See http://www.cisco.com/warp/public/687/Directory.shtml for additional
TAC contact information, including instructions and e-mail addresses for
use in various languages.
Give the URL of this notice as evidence of your entitlement to a free
upgrade. Free upgrades for non contract customers must be requested
through the TAC. Please do not contact either "psirtat_private" or
"security-alertat_private" for software upgrades.
Workarounds
Web Management can be disabled on the switch.
Access control lists can be applied to restrict HTTP access to the Cisco
CSS 11000 series switch. Access control lists also affect traffic to the
Virtual interface of the Cisco CSS 11000 series switch, so must be applied
with care. For further details on configuring access lists please refer to
the product documentation:
http://www.cisco.com/univercd/cc/td/doc/product/webscale/css/bsccfggd/profiles.htm
http://www.cisco.com/univercd/cc/td/doc/product/webscale/css/advcfggd/sgacleql.htm
Exploitation and Public Announcements
The Cisco PSIRT is not aware of any malicious use of the vulnerability
described in this advisory.
These vulnerabilities were reported to PSIRT by CERT/CC and were
discovered by Anton Rager of Avaya Security Consulting Services.
Status of This Notice: Interim
This is an Interim notice. Cisco anticipates issuing updated versions of
this notice at irregular intervals as there are material changes in the
facts, and will continue to update this notice as necessary. Although
Cisco cannot guarantee the accuracy of all statements in this notice, all
of the facts have been checked to the best of our ability.
Distribution
This notice will be posted on Cisco's Worldwide Web site at
http://www.cisco.com/warp/public/707/arrowpoint-webmgmt-vuln-pub.shtml.
In addition to Worldwide Web posting, a text version of this notice is
clear-signed with the Cisco PSIRT PGP key and is posted to the following
e-mail and Usenet news recipients:
* cust-security-announceat_private
* bugtraqat_private
* firewallsat_private
* first-teamsat_private (includes CERT/CC)
* ciscoat_private
* cisco-nspat_private
* comp.dcom.sys.cisco
* Various internal Cisco mailing lists
Future updates of this notice, if any, will be placed on Cisco's Worldwide
Web server, but may or may not be actively announced on mailing lists or
newsgroups. Users concerned about this problem are encouraged to check the
URL given above for any updates.
Revision History
+-----------------------------------------------------------------+
| Revision 2.0 | August 14, 2002 | Revised Interim Public Release |
|--------------+-----------------+--------------------------------|
| Revision 1.0 | May 31, 2001 | Initial Public Release |
+-----------------------------------------------------------------+
Cisco Security Procedures
Complete information on reporting security vulnerabilities in Cisco
products, obtaining assistance with security incidents, and registering to
receive security information from Cisco, is available on Cisco's Worldwide
Web site at
http://www.cisco.com/warp/public/707/sec_incident_response.shtml. This
includes instructions for press inquiries regarding Cisco security
notices.
----------------------------------------------------------------------
This notice is Copyright 2002 by Cisco Systems, Inc. This notice may be
redistributed freely after the release date given at the top of the text,
provided that redistributed copies are complete and unmodified, and
include all date and version information.
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