full-disclosure - password hash, funny myth in the industry!

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date: Wed, 17 Oct 2007 01:15:56 +0545
From: "Bipin Gautam" <gautam.bipin@...il.com>
To: full-disclosure@...ts.grok.org.uk
Subject: password hash, funny myth in the industry!

hi list,
i was reading the article, 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

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