===================================================================== CERT-Renater Note d'Information No. 2002/VULN129 _____________________________________________________________________ DATE : 22/05/2002 HARDWARE PLATFORM(S) : Cisco Content Service Switch (CSS) 11000 series OPERATING SYSTEM(S) : ====================================================================== -----BEGIN PGP SIGNED MESSAGE----- Cisco Security Advisory: Content Service Switch HTTP Processing Vulnerabilities Revision 1.0: INTERIM For Public Release 2002 May 15 18:00 GMT - - - ---------------------------------------------------------------------- - --------- Please provide your feedback on this document. - - - ---------------------------------------------------------------------- - --------- 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 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 http://www.cisco.com/warp/public/707/css-http-post-pub.shtml. 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 the following WebNS software revisions are affected by these vulnerabilities. * 04.01.053s and earlier * 05.00.038s and earlier * 05.01.012s and earlier * 05.02.005s and earlier The CSS 11500 Series switches running the following WebNS software revisions are affected by these vulnerabilities: * 05.10.0.01 No other Cisco product is currently known to be affected by these vulnerabilities. To determine your software revision, type version at the command line prompt on your Content Service Switch. Details ======= 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. Impact ====== Both defects may reboot the device resulting in a Denial of Service (DoS) due to decreased availability. Software Versions and Fixes =========================== Cisco WebNS Software +-----------------------------------------------------+ | Version | Fixed Regular Release (available | | Affected | now).Fix carries forward into all | | | later versions. | |------------+----------------------------------------| | 4.01 | 5.00.045 | |------------+----------------------------------------| | 5.0 | 5.00.045 | |------------+----------------------------------------| | 5.01 | 5.03 | |------------+----------------------------------------| | 5.02 | 5.03 | |------------+----------------------------------------| | 5.10 | TBD | +-----------------------------------------------------+ Obtaining Fixed Software ======================== Cisco is offering free software upgrades to address this vulnerability for all affected customers. Customers may only install and expect support for the feature sets they have purchased. Customers with service contracts should contact their regular update channels to obtain any software release containing the feature sets they have purchased. For most customers with service contracts, this means that upgrades should be obtained through the Software Center on Cisco's Worldwide Web site at http://www.cisco.com. Customers whose Cisco products are provided or maintained through a prior or existing agreement with third-party support organizations such as Cisco Partners, authorized resellers, or service providers should contact that support organization for assistance with obtaining the free software upgrade(s). Customers who purchased directly from Cisco but who do not hold a Cisco service contract, and customers who purchase through third party vendors but are unsuccessful at obtaining fixed software through their point of sale, should obtain fixed software by contacting the Cisco Technical Assistance Center (TAC) using the contact information listed below. In these cases, customers are entitled to obtain an upgrade to a later version of the same release or as indicated by the applicable row in the Software Versions and Fixes table (noted above). Cisco 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: tac@cisco.com See http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml for additional TAC contact information, including special localized telephone numbers and instructions and e-mail addresses for use in various languages. Please have your product serial number available and give the URL of this notice as evidence of your entitlement to a free upgrade. Please do not contact either "psirt@cisco.com" or "security-alert@cisco.com" for software upgrades. Workarounds =========== * Disable web-based management of the device: restrict web-mgmt restrict xml Exploitation and Public Announcements ===================================== 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. Status of This Notice: INTERIM ============================== This is an interim notice. 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. Cisco does not anticipate issuing updated versions of this notice unless there is some material change in the facts. Should there be a significant change in the facts, Cisco may update this notice. Distribution ============ This notice will be posted on Cisco's Worldwide Web site at http://www.cisco.com/warp/public/707/css-http-post-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-announce@cisco.com * bugtraq@securityfocus.com * first-teams@first.org (includes CERT/CC) * cisco@spot.colorado.edu * comp.dcom.sys.cisco * firewalls@lists.gnac.com * 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 |2002-May-15|Initial public release | | 1.0 |18:00 GMT | | | +--------------------------------------------------------------------- - ----+ 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 website at http://www.cisco.com/warp/public/707/sec_incident_response.shtml. This includes instructions for press inquiries regarding Cisco security notices. All Cisco Security Advisories are available at http://www.cisco.com/go/psirt/. - - - ---------------------------------------------------------------------- - --------- 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. - - - ---------------------------------------------------------------------- - --------- -----BEGIN PGP SIGNATURE----- Version: PGPfreeware 7.0.3 for non-commercial use iQCVAwUBPOuZneqKnSvXVOjNAQGSFgP7BIiwJiX/SUqzXmlbfx4cNLl3ELMKkfWc /Jg4C9OaxgwGwq8BWhdXpKJyt7gFV9e4PziVcOEHPtR1BWBrxOhoZYu02FuTvU9z 2lxwNmhMDdJoLloSKQ+Nbjfo7Nrp/3HEqjOWHrqpvECBIgLVERwakuZm0MKmGZ/L IK8xDwxRm2s= =VFYr -----END PGP SIGNATURE----- ====================================================================== ========================================================= Les serveurs de référence du CERT-Renater http://www.urec.fr/securite http://www.cru.fr/securite http://www.renater.fr ========================================================= + CERT-RENATER | tel : 01-53-94-20-44 + + 151 bd de l'Hopital | fax : 01-53-94-20-41 + + 75013 Paris | email: certsvp@renater.fr + =========================================================