Hi,
I has read about Skype on BlackHat. They say, if you
capture the encripted authentification packets and
replay the data in the packets, you can login! Only,
you may not be able to get further info inside the
packets as they are encripted. Still, replay attack is
a serious security breach.
Shreyas Zare
--- Chroot <chrooted@gmail.com> wrote:
Hi,
I was fiddling a little bit with Skype when I
discovered that I could
login at the same time from two different terminals
unlike other
messengers such as MSN. In such a scenario if
someone gets hold of
your skype identity you would never know and he
might just successfuly
abuse your account again and again.
Other things that I noticed were that an attacker
would be able to
accept calls directed to the authentic user. For
e.g. the ring comes
on both the terminals the user who accepts the call
first get access
while the second one gets missed call notification.
I've not tested another issue thoroughly but once I
was also able to
get the text communnications simultaneously on both
the terminals.
This could be a serious issue if I could test that
again.
Last thing, does Skype know about this? I'll be
surprised if they
don't. What do people feel on the list about this?
Did Skype introduce
this as a feature? If yes, then I would say probably
its a bad
feature.
Looking forward to some discussion/light on this
topic.
Thanx.
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eMail: shreyas@technitium.com
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