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Netwin SmsGate "Content-Length" Header Processing Denial of Service

Secunia Advisory: SA29149  
Release Date: 2008-02-29

Critical:
Moderately critical
Impact: DoS
Where: From remote
Solution Status: Unpatched

Software:NetWin SmsGate 1.x

This advisory is currently marked as unpatched!
- Companies can be alerted when a patch is released!


Description:
Luigi Auriemma has reported a vulnerability in Netwin SmsGate, which can be exploited by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to an error when handling HTTP "Content-Length" headers. This can be exploited to cause the service to stop responding when it displays a debug message box via e.g. a specially crafted HTTP request containing an overly large "Content-Length" header value.

NOTE: Reportedly, the DoS lasts only as long as the debug message box is displayed and the server resumes if e.g. an admin selects the "Ignore" button.

Solution:
Restrict network access to the service.

Provided and/or discovered by:
Luigi Auriemma

Original Advisory:
http://aluigi.altervista.org/adv/smsgheit-adv.txt



Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.

Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.


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