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Thomson SpeedTouch Predictable TCP ISN Generation Weakness

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Release Date:  2004-08-06    Views:  9,814

Secunia Advisory SA12238

Where:

From remote

Impact:

Hijacking, Spoofing

Solution Status:

Unpatched

CVE Reference(s):

Description


A security issue has been reported in Thomson SpeedTouch Home ADSL Modem, which potentially can be exploited by malicious people to spoof or hijack connections.

The problem is that TCP ISNs (Initial Sequence Numbers) are generated in a predictable way.

The problem has been reported in firmware version GV8BAA3.270 (1003825). Other versions may also be affected.


Solution:
Use another product.

Provided and/or discovered by:
Discovered by an anonymous person and reported through iDefense.

Original Advisory:
http://www.idefense.com/application/poi/display?id=120&type=vulnerabilities

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Thomson SpeedTouch Predictable TCP ISN Generation Weakness

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