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TITLE:
T-Com Speedport Login Brute Force Weakness

SECUNIA ADVISORY ID:
SA25266

VERIFY ADVISORY:
http://secunia.com/advisories/25266/

CRITICAL:
Not critical

IMPACT:
Brute force

WHERE:
>From local network

OPERATING SYSTEM:
T-Com Speedport W 700V
http://secunia.com/product/14218/

DESCRIPTION:
Michael Domberg has reported a weakness in T-Com Speedport, which can
be exploited by malicious people to brute force an administrative
user's password.

The weakness is caused due to the delay routines for failed logins
being implemented in Javascript and executed on the client side. This
can be exploited by submitting the login request directly to the cgi
script and allowing brute force attacks.

The weakness is reported in Speedport W 700V.

SOLUTION:
Disable remote administration.

Use the device in a trusted network environment only.

PROVIDED AND/OR DISCOVERED BY:
Michael Domberg

ORIGINAL ADVISORY:
http://www.devtarget.org/speedport700-advisory-05-2007.txt

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