Full Disclosure: Re: Argentinean Arnet isp webmail

["Ing. Juan Perez" <etropos () gmail com>]

Confirmed, thanks
and POP3 too:

c:\>telnet pop3.arnet.com.ar 110

+OK
user P0*****4241 () arnet com ar
+OK please, send your password
pass P0*****4241               >>>>>>>>>>>>>> real password
+OK Welcome to your mailbox !!!
quit
+OK Have a nice day!


Se ha perdido la conexión con el host.

+OK
user P0*****4241 () arnet com ar
+OK please, send your password
pass P0*****4                 >>>>>>>>>>>>>>> only first 8
+OK Welcome to your mailbox !!!
quit
+OK Have a nice day!

----- Original Message ----- 
From: <reallyanonymous () hush com>
To: <full-disclosure () lists grok org uk>
Sent: Wednesday, November 04, 2009 8:00 PM
Subject: [Full-disclosure] Argentinean Arnet isp webmail


> Moderate vulnerability in argentinean ARNET isp webmail.
>
> well, there is some kind of weakened authentication on the webmail
> of Arnet
> (webmail.arnet.com.ar) to access any account all you need is to
> guess the first 8 characters of the password, even if the password
> is 9,10,11,12,14 or more characters long. This password is the same
> than ADSL access acount.
>
> for example:
>
> For this account
> johndoe () arnet com ar
> password:a1a2a3a4a5a6a7a8a9a0
>
> you only need (first 8 character)
>
> johndoe () arnet com ar
> password:a1a2a3a4
>
> ADSL account in this case is
>
> Name: johndoe () arnet
> Password:a1a2a3a4a5a6a7a8a9a0
>
> there are no anti bruteforce mecanism so you can guess almost any
> account within a couple of hours.
>
>
> _______________________________________________
> Full-Disclosure - We believe in it.
> Charter: http://lists.grok.org.uk/full-disclosure-charter.html
> Hosted and sponsored by Secunia - http://secunia.com/
>
> __________ Información de ESET NOD32 Antivirus, versión de la base de 
> firmas de virus 4579 (20091106) __________
>
> ESET NOD32 Antivirus ha comprobado este mensaje.
>
> http://www.eset.com

__________ Información de ESET NOD32 Antivirus, versión de la base de firmas de virus 4579 (20091106) __________

ESET NOD32 Antivirus ha comprobado este mensaje.

http://www.eset.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/