Cisco Security Advisory-
The Cisco Content Service Switch (CSS) 11000 series switches are susceptible to a soft reset caused by improper handling of HTTP POST requests to the web management interface.
These vulnerabilities are documented as Cisco bug ID's CSCdx41911 and CSCdw26696.
This advisory will be posted at https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20020515-css-http-post.
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This section provides details on affected products.
Vulnerable 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 the following WebNS software revisions are affected by these vulnerabilities.
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04.01.053s and earlier
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05.00.038s and earlier
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05.01.012s and earlier
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05.02.005s and earlier
The CSS 11500 Series switches running the following WebNS software revisions are affected by these vulnerabilities:
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05.10.0.01
To determine your software revision, type version at the command line prompt on your Content Service Switch.
Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by these vulnerabilities.
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04.01.053s and earlier
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CSCdw26696
The CSS formerly used TCP port 8081 for its web management interface. The web server that listens on port 8081 did not understand XML data, and in trying to process the request would result in a soft reset of the device. Currently all web management interface traffic should be directed over SSL or "https".
CSCdx41911
The CSS may be forced to reboot by sending an HTTPS post request to the web management interface of the device. This may occur even if the sender of the request is not yet authenticated to the device.
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Disable web-based management of the device:
restrict web-mgmt restrict xml
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When considering software upgrades, also consult http://www.cisco.com/go/psirt and any subsequent advisories to determine exposure and a complete upgrade solution.
In all cases, customers should exercise caution to be certain the devices to be upgraded contain sufficient memory and that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, contact the Cisco Technical Assistance Center ("TAC") or your contracted maintenance provider for assistance.
Cisco WebNS Software
Version Affected
Fixed Regular Release. Fix carries forward into all later versions.
4.01
5.00.045 (available 2002/06/11)
5.0
5.00.045 (available 2002/06/11)
5.01
5.03
5.02
5.03
5.10
TBD
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The vulnerability described by CSCdx41911 was originally reported to Cisco by James Mancini of Netreo Inc. The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities described in this advisory.
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To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
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Revision 1.3
2002-May-18
Updated availability dates for fixed software releases.
Revision 1.2
2002-May-17
Updated availability dates for fixed software releases.
Revision 1.1
2002-May-16
Updated title of document to more accurately reflect the problem.
Revision 1.0
2002-May-15
Initial public release.
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