Messages in this thread | | | Subject | Re: tcp vulnerability? haven't seen anything on it here... | From | jamal <> | Date | 22 Apr 2004 10:27:02 -0400 |
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On Thu, 2004-04-22 at 09:46, Giuliano Pochini wrote: > On Thu, 22 Apr 2004, jamal wrote: > > > On Thu, 2004-04-22 at 04:23, Giuliano Pochini wrote: > > > > > Yes, but it is possible, expecially for long sessions. > > > > In other words, 80% or more of internet traffic would not be affected > > still using http1.0 would not be affected. > > And for something like a huge download to just regular joe, this is more > > of a nuisance assuming some kiddie has access between you and the > > server. > > No, TCP/IP is 100% vulnerable to the man-in-the-middle attach. > There is no cure for that.
Unless its a private network with locked vaults for the pipes, any network is vulnerable. I am not trying to downplay the relevance of this; all i am saying is it may a little overhyped with the media being involved. Its infact harder to create this attack compared to a simple SYN attack.
On Thu, 2004-04-22 at 09:58, Florian Weimer wrote: jamal <hadi@cyberus.ca> writes: > > > OTOH, long lived BGP sessions are affected assuming you are going across > > hostile path to your peer. > > Hostile path is not required. Not at all. 8-( > >
Unless i misunderstood: You need someone/thing to see about 64K packets within a single flow to make the predicition so the attack is succesful. Sure to have access to such capability is to be in a hostile path, no? ;->
> And it's not BGP specific. You might be able to use this attack to > split IRC networks, too. However, it's a bit harder in this case > because IRC servers usually use more random source ports.
Any long lived flow with close to fixed ports. FTP from kernel.org could be vulnerable - get a better client and its just becomes a nuisance. 80% of the internet traffic is still TCP/HTTP1.0 which is very short lived (there could be changes lately - these are numbers from a while back) i.e you wont see more than 8 packets i.e it is highly unlikely your traffic there is affected even if you used fixed ports.
cheers, jamal
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