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Experts scramble to quash IPv6 flaw
Robert Lemos, SecurityFocus 2007-05-09

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The IETF reaction may have set a new speed record for the standards-setting body. With engineers arguing technical merits and peer-reviewing others' work while vendors push their specific requirements, the IETF is not known for making quick decisions.

Yet, after debating the issue since the CanSecWest presentation, engineers have published two proposals: get rid of the feature or make everyone turn it off unless its really needed.

"In practice it, it will be disabled, whether it gets left around for future usage, that's up in the air," said Robert Hinden, co-chair of the IPv6 Working Group for the IETF and a Nokia Fellow at the networking and phone giant.

Yet, companies and the engineering group responsible for a large portion of the IPv6 routing code have moved quickly to disable the feature. By late April, the Kame Project, which has created the code used in many flavors of the BSD operating system as well as routers, had disabled the Type 0 Routing Header in its own code.

"They don't just avoid walking the RH0 header, but they also now drop packets that contain it," said Theo de Raadt, project leader for OpenBSD.

Cisco has issued a security advisory on the issue. Both Cisco and Juniper declined to provide a representative to discuss the issue.

Because IPv6 has not been fully deployed in most networks, it will likely only take two or three years for almost all Internet service providers to fix the issues, de Raadt said.

ISC's Vixie agreed that the problem should be almost completely eliminated in three years.

"I'd say in three years this will be a footnote," Vixie said.


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Comments Mode:
Experts scramble to quash IPv6 flaw 2007-05-10
Yes, serious (1 replies)
thats silly 2007-05-10
jesse
Experts scramble to quash IPv6 flaw 2007-05-10
Anonymouse (1 replies)
out of IP v4... 2007-05-18
Anonymous
Experts scramble to quash IPv6 flaw 2007-05-12
Anonymous (1 replies)
Not so new, and not unexpected. 2007-05-16
support (at) securesoftware (dot) ca [email concealed]


 

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