-----BEGIN PGP SIGNED MESSAGE----- Internet Security Systems Security Brief April 20, 2004
Multiple Vendor TCP Denial of Service Vulnerability Synopsis: A vulnerability in common implementations of the TCP (Transmission Control Protocol) Internet protocol has been published. TCP is a component of the TCP/IP protocol suite, which is the de facto protocol for Internet communications. The vulnerability may allow unauthorized attackers to reset active TCP/IP connections. A related attack may also make it possible to inject malicious data into TCP streams. These vulnerabilities were first documented by Paul A. Watson and discussed in his paper "Slipping In The Window: TCP Reset Attacks". Impact: Many standards compliant TCP implementations appear to be vulnerable to denial of service on TCP connections. The most serious possible impact of this vulnerability is a coordinated attack against BGP (Border Gateway Protocol) connections. BGP is the most popular exterior routing protocol in use on the Internet. If BGP routing is disrupted as a result of an attack, significant and widespread impact may result in network downtime and interruption of critical business processes and transactions. Affected Versions: Please refer to the "Vendor Information" section in the following URL for the most current affected version and vendor information: http://www.uniras.gov.uk/vuls/2004/236929/index.htm For the complete ISS X-Force Security Alert, please visit: http://xforce.iss.net/xforce/alerts/id/170 ______ About Internet Security Systems (ISS) Founded in 1994, Internet Security Systems (ISS) (Nasdaq: ISSX) is a pioneer and world leader in software and services that protect critical online resources from an ever-changing spectrum of threats and misuse. Internet Security Systems is headquartered in Atlanta, GA, with additional operations throughout the Americas, Asia, Australia, Europe and the Middle East. Copyright (c) 2004 Internet Security Systems, Inc. All rights reserved worldwide. Permission is hereby granted for the electronic redistribution of this document. It is not to be edited or altered in any way without the express written consent of the Internet Security Systems X-Force. If you wish to reprint the whole or any part of this document in any other medium excluding electronic media, please email [EMAIL PROTECTED] for permission. Disclaimer: The information within this paper may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information. X-Force PGP Key available on MIT's PGP key server and PGP.com's key server, as well as at http://www.iss.net/security_center/sensitive.php Please send suggestions, updates, and comments to: X-Force [EMAIL PROTECTED] of Internet Security Systems, Inc. -----BEGIN PGP SIGNATURE----- Version: 2.6.2 iQCVAwUBQIZdlzRfJiV99eG9AQHuAQP/ZpSgyxIukVOKT5BQhD3FWf7wRc0Yn5K5 RxJSKs1akJUWia3hZ6JRD0PJlkcIUTPmdoRd5nicC7/vmhoofBBOO8euWLYdYsuH o1ftkr9Sl3cxqCiLdeTzPGuFE4tbwTUt2IN0Xjsmyaj4snOt6MkDr7tutWDo0OKo uK5KZAbM39w= =mO0H -----END PGP SIGNATURE----- _______________________________________________ ISSForum mailing list [EMAIL PROTECTED] TO UNSUBSCRIBE OR CHANGE YOUR SUBSCRIPTION, go to https://atla-mm1.iss.net/mailman/listinfo/issforum To contact the ISSForum Moderator, send email to [EMAIL PROTECTED] The ISSForum mailing list is hosted and managed by Internet Security Systems, 6303 Barfield Road, Atlanta, Georgia, USA 30328.
