Re: [Full-disclosure] password hash, funny myth in the industry!

All BitTorrent Trackers built on the tb-source use this scheme, when you
login you recieve a cookie with your password hash, when someone steals
the cookie/pw-hash they can steal that account... Funny sidenote,
tb-source is ofter vulnerable to XSS

upb wrote:
this would effectively make the password hash the password.
Are you sure this scheme is used?:P


On 10/16/07, *Bipin Gautam* <gautam.bipin@xxxxxxxxx
<mailto:gautam.bipin@xxxxxxxxx>> wrote:

hi list,
i was reading the article,
http://www.f-secure.com/weblog/archives/00001293.html
<http://www.f-secure.com/weblog/archives/00001293.html>
but just an example.

why do many people out there think password hash "can't be" as good as
the password itself and needs to be computed/cracked first before it
can be used?

Consider the fact, many websites/forums don't use password hash+salt,
just password hash( generally SHA1, MD5) that gets computer client
side and POSTED to the web-forum for user authentication.

If someone can sniff this, given that, user name is available using
simple GUI tools as 'Tamper Data' ( firefox plug in ) even a low tech
malicious user can log on with someones credentials without having to
crack the password hash, instead just using the password hash itself
manipulating the POST request.

makes sense? :)

thanks,
-bipin

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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/

_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/