Vulnerability Note VU#267289

IPv6 Type 0 Route Headers allow sender to control routing

Original Release date: 13 Jun 2007 | Last revised: 22 Jul 2011


IPv6 Type 0 Route Headers allow the sender to control packet routing. This vulnerability may allow an attacker to cause a denial-of-service condition.


Routing header options provided by IPv6 allow packet senders to indicate specific nodes through which the packet should travel. Note that a node is defined as any device that implements IPv6, which includes hosts as well as routing devices. According to FreeBSD-SA-07:03.ipv6:

    An attacker can "amplify" a denial of service attack against a link between two vulnerable hosts; that is, by sending a small volume of traffic the attacker can consume a much larger amount of bandwidth between the two vulnerable hosts.

    An attacker can use vulnerable hosts to "concentrate" a denial of service attack against a victim host or network; that is, a set of packets sent over a period of 30 seconds or more could be constructed such that they all arrive at the victim within a period of 1 second or less.


This condition can facilitate a number of different impacts including packet amplification, bypassing filtering devices, denial of service, and defeating IPv6 Anycast.


See the systems affected portion of this document for information about updates for specific vendors.

Systems Affected (Learn More)

VendorStatusDate NotifiedDate Updated
Apple Computer, Inc.Affected09 May 200721 Jun 2007
Cisco Systems, Inc.Affected09 May 200715 May 2007
FreeBSD, Inc.Affected-14 May 2007
FujitsuAffected09 May 200715 Jun 2007
HitachiAffected09 May 200714 May 2007
Internet Initiative JapanAffected-14 May 2007
NEC CorporationAffected09 May 200715 Jun 2007
OpenBSDAffected-14 May 2007
Red Hat, Inc.Affected-17 May 2007
rPathAffected-21 Jun 2007
Secure Computing Network Security DivisionAffected09 May 200715 Jun 2007
Sun Microsystems, Inc.Affected09 May 200717 May 2007
Force10 Networks, Inc.Not Affected09 May 200722 Jul 2011
Novell, Inc.Not Affected09 May 200717 May 2007
3com, Inc.Unknown09 May 200709 May 2007
If you are a vendor and your product is affected, let us know.View More »

CVSS Metrics (Learn More)

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A N/A



This vulnerability was reported by Philippe Biondi Arnaud Ebalard of EADS Innovation Works — IW/SE/CS, IT Sec lab, Suresnes, France at CanSecWest 2007.

This document was written by Chris Taschner.

Other Information

  • CVE IDs: CVE-2007-2242
  • Date Public: 24 Apr 2007
  • Date First Published: 13 Jun 2007
  • Date Last Updated: 22 Jul 2011
  • Severity Metric: 11.03
  • Document Revision: 38


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