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Asterisk Skinny Channel Driver Denial of Service

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Release Date:  2007-08-08    Last Update:  2007-08-15    Views:  10,954

Secunia Advisory SA26340

Where:

From remote

Impact:

DoS

Solution Status:

Vendor Patch

CVE Reference(s):

Description


A vulnerability has been reported in Asterisk, which can be exploited by malicious users to cause a DoS (Denial of Service).

The vulnerability is caused due to the Skinny channel driver (chan_skinny) improperly processing packets. This can be exploited to crash the application by sending a "CAPABILITIES_RES_MESSAGE" packet with the capabilities count greater than the total number of items in the "capabilities_res_message" array.

The vulnerability is reported in the following versions:
Asterisk Open Source 1.4.x, versions prior to 1.4.10
AsteriskNOW pre-release, versions prior to beta7
Asterisk Appliance Developer Kit, versions prior to 0.7.0
s800i versions prior to 1.0.3.


Solution:
Asterisk Open Source 1.4.x:

Further details available to Secunia VIM customers

Provided and/or discovered by:
The vendor credits Wei Wang of McAfee AVERT Labs.

Original Advisory:
http://downloads.digium.com/pub/asa/ASA-2007-019.pdf

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: Asterisk Skinny Channel Driver Denial of Service

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