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Thomson TCW690 POST Password Validation Vulnerability
From: MurDoK <murdok.lnx () gmail com>
Date: Sat, 19 Feb 2005 10:41:45 +0100
I found a vulnerability in this cablemodem which a malicious user inside *LAN
can get the control of the cablemodem easily.
This cablemodem model is given by the spanish ISP "AUNA".
Product: Thomson TCW690 cablemodem
Affected Version: ST42.03.0a (not tested in minor versions)
Immune Version: ???
Vendor-Status: informed but no response
The http server inside this cablemodem doesn't properly validate the supplied
password when an user want to do some change in the configuration and sends a
POST request. In the exploit I show how to change the admin password but you
can also open ports, deny a user access, restore factory defaults, (all)...
with a little changes.
No response from vendor. There isn't fix available.
2005.02.06 - Bug found.
2005.02.07 - Informed the vendor broadband () thomson net, no response.
2005.02.11 - Informed the vendor webmaster () thomson net no response too.
2005.02.19 - Public disclosure.
Full-Disclosure - We believe in it.
- Thomson TCW690 POST Password Validation Vulnerability MurDoK (Feb 19)