Forum Thread: IPV6 vulnerability

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p_noot IPV6 vulnerability
Member 5th Apr, 2011 16:39
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Hi all,

There is a serious IPV6 vulnerability that can not be patched.

Links related to this vulnerability:

This vulnerability is not detected by PSI.
Windows OS is affected by this vulnerability.
I do not know if this vulnerability is a problem for other OS too.

Post "RE: IPV6 vulnerability" has been selected as an answer.
mogs RE: IPV6 vulnerability
Member 5th Apr, 2011 17:08
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Here's some info/explanation just found :-

Windows PCs can be compromised by an IPv6 flaw

SLAAC attacks possible
By Asavin Wattanajantra
Tue Apr 05 2011, 12:49
AN INSECURITY RESEARCHER has revealed that IPv6 can enable 'man in the middle attacks' on Windows PCs.
Alec Waters of the Infosec Institute showed off a proof of concept attack that targeted Windows 7 systems, but said it could apply in theory to any operating system with IPv6 installed and operational.
The attack physically needs rogue hardware, a router that's connected to the victim's IPv4 network that will act as a sort of network parasite. The router will have two interfaces, with the one facing the victim IPv6-capable and the one facing the Internet IPv4-capable.
The systems at risk will use the newer IPv6 protocol rather than the older IPv4 protocol. This means that in an IPv4 based network, traffic will flow through the rogue router instead of legitimate routers. It is called a Stateless Address Auto Configuration (SLAAC) attack, named after the process it is taking advantage of.

Read more:
The Inquirer

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Anthony Wells RE: IPV6 vulnerability
Expert Contributor 5th Apr, 2011 17:44
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Hi ,

Just to add to the info provided by Mogs , the PSI does not detect/display unpatched programmes , apps or hardware ; this is a deliberate decision as , apparently , it conflicts with certain commercial priorities . The exception to this is your browser(s) and add-ons as detailed in the "secure browsing" module of the PSi .

No doubt Secunia will have a Secunia Advisory for the problem when they have completed their research on the vulnerability and it's consequences .

Hope that helps .



It always seems impossible until its done.
Nelson Mandela
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p_noot RE: IPV6 vulnerability
Member 5th Apr, 2011 23:56
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Hi Mogs, Anthony,

Thanks for the useful info.

I understand:
1. If IPv6 is activated you are vulnerable
for a man-in-the-middle-attack on every OS,
not only on a Windows 7 system.
2. Disabling IPv6 is at best a short term solution,
since without IPv6 the grow of the Internet
will grind to a halt.
3. IPv6 has a security issue by design.
4. Secunia is working on a advisory about
this problem.

Meanwhile, the hunt for network parasites and
rogue RAs has to be on.
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