Re: Skype vulnerability or feature

[Shreyas Zare <shreyasonline () yahoo com>]

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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Shreyas Zare
Co-Founder, Technitium

eMail: shreyas () technitium com

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This List Sponsored by: Cenzic

Concerned about Web Application Security? 
Why not go with the #1 solution - Cenzic, the only one to win the Analyst's 
Choice Award from eWeek. As attacks through web applications continue to rise, 
you need to proactively protect your applications from hackers. Cenzic has the 
most comprehensive solutions to meet your application security penetration 
testing and vulnerability management needs. You have an option to go with a 
managed service (Cenzic ClickToSecure) or an enterprise software 
(Cenzic Hailstorm). Download FREE whitepaper on how a managed service can 
help you: http://www.cenzic.com/news_events/wpappsec.php 
And, now for a limited time we can do a FREE audit for you to confirm your 
results from other product. Contact us at request () cenzic com for details.
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