National Cyber-Alert System

Vulnerability Summary for CVE-2008-4609

Overview

The TCP implementation in (1) Linux, (2) platforms based on BSD Unix, (3) Microsoft Windows, (4) Cisco products, and probably other operating systems allows remote attackers to cause a denial of service (connection queue exhaustion) via multiple vectors that manipulate information in the TCP state table, as demonstrated by sockstress.

Description

Please see also: http://blog.robertlee.name/2008/10/more-detailed-response-to-gordons-post.html and http://www.curbrisk.com/security-blog/robert-e-lee-discusses-tcp-denial-service-vulnerability-sc-magazine.html

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

References to Advisories, Solutions, and Tools

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External Source: MISC

Name: https://www.cert.fi/haavoittuvuudet/2008/tcp-vulnerabilities.html

Hyperlink:https://www.cert.fi/haavoittuvuudet/2008/tcp-vulnerabilities.html

External Source: MISC

Name: http://www.outpost24.com/news/news-2008-10-02.html

Hyperlink:http://www.outpost24.com/news/news-2008-10-02.html

External Source: CISCO

Name: 20081017 Cisco Response to Outpost24 TCP State Table Manipulation Denial of Service Vulnerabilities

Hyperlink:http://www.cisco.com/en/US/products/products_security_response09186a0080a15120.html

External Source: MISC

Name: http://searchsecurity.techtarget.com.au/articles/27154-TCP-is-fundamentally-borked

Hyperlink:http://searchsecurity.techtarget.com.au/articles/27154-TCP-is-fundamentally-borked

External Source: MLIST

Name: [dailydave] 20081002 TCP Resource Exhaustion DoS Attack Speculation

Hyperlink:http://lists.immunitysec.com/pipermail/dailydave/2008-October/005360.html

External Source: MISC

Name: http://blog.robertlee.name/2008/10/conjecture-speculation.html

Hyperlink:http://blog.robertlee.name/2008/10/conjecture-speculation.html