Full Disclosure mailing list archives
Re: TCP Hijacking (aka Man-in-the-Middle)
From: 3APA3A <3APA3A () SECURITY NNOV RU>
Date: Fri, 26 Oct 2007 00:43:10 +0400
Valdis, you should back to Cretaceous period, because Oliver talks about man-in-the-middle attack, not about blind TCP spoofing. Randomized ISN doesn't protect against MitM. --Thursday, October 25, 2007, 9:40:53 PM, you wrote to olivereatsolives () gmail com: VKve> On Thu, 25 Oct 2007 10:09:47 PDT, Oliver said:
I have been searching all over the place to find an answer to this question, but Google has made me feel unlucky these last few days. I hope I could find more expertise here. The burning question I have been pondering over is - could TCP connections be hijacked both ways?
VKve> Quick summary: VKve> Steve Bellovin pointed out the issue. 19<stone age> VKve> Kevin Mitnick exploited it. 19<bronze age> VKve> Steve wrote RFC1948, which basically said "Use randomized ISNs so the attacker VKve> has to work harder at it". 1996. VKve> A lot of vendors sort of implemented it. 1996-2000. VKve> Michael Zalewski did a nice phase-space analysis and showed a lot of vendors VKve> botched it. http://lcamtuf.coredump.cx/oldtcp/tcpseq.html 2000 VKve> A lot of vendors fixed their shit, but a lot didn't. VKve> http://lcamtuf.coredump.cx/newtcp/ 2001. VKve> You're now caught up to 6 years ago. -- ~/ZARAZA http://securityvulns.com/ Впрочем, важнее всего - алгоритм! (Лем) _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
Current thread:
- TCP Hijacking (aka Man-in-the-Middle) Oliver (Oct 25)
- Re: TCP Hijacking (aka Man-in-the-Middle) reepex (Oct 25)
- Re: TCP Hijacking (aka Man-in-the-Middle) Oliver (Oct 25)
- Re: TCP Hijacking (aka Man-in-the-Middle) Valdis . Kletnieks (Oct 25)
- Re: TCP Hijacking (aka Man-in-the-Middle) 3APA3A (Oct 25)
- Re: TCP Hijacking (aka Man-in-the-Middle) Valdis . Kletnieks (Oct 25)
- Re: TCP Hijacking (aka Man-in-the-Middle) 3APA3A (Oct 26)
- Re: TCP Hijacking (aka Man-in-the-Middle) Valdis . Kletnieks (Oct 26)
- Re: TCP Hijacking (aka Man-in-the-Middle) 3APA3A (Oct 26)
- Re: TCP Hijacking (aka Man-in-the-Middle) Valdis . Kletnieks (Oct 26)
- Re: TCP Hijacking (aka Man-in-the-Middle) don bailey (Oct 26)
- Re: TCP Hijacking (aka Man-in-the-Middle) reepex (Oct 26)
- Re: TCP Hijacking (aka Man-in-the-Middle) 3APA3A (Oct 25)
- Re: TCP Hijacking (aka Man-in-the-Middle) reepex (Oct 25)
- Re: TCP Hijacking (aka Man-in-the-Middle) Oliver (Oct 29)