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Asterisk SIP Response Code Denial of Service

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Release Date:  2007-03-22    Last Update:  2007-04-25    Views:  19,751

Secunia Advisory SA24579

Where:

From remote

Impact:

DoS

Solution Status:

Vendor Patch

Software:

CVE Reference(s):

Description


qwerty1979 has reported some vulnerabilities in Asterisk, which can be exploited by malicious people to cause a DoS (Denial of Service).

The vulnerabilities are caused due to certain errors in the chan_sip driver when processing SIP replies from a remote system and can be exploited to crash the service via the remote system sending a SIP reply containing an invalid SIP response code in the first line of the UDP packet.

The vulnerabilities are reported in the 1.2.x branch before 1.2.18 and the 1.4.x branch before 1.4.3.


Solution:
Update to version 1.4.3.

Provided and/or discovered by:
qwerty1979

Original Advisory:
http://www.sineapps.com/news.php?rssid=1707
http://bugs.digium.com/view.php?id=9313

http://lists.grok.org.uk/pipermail/full-disclosure/2007-April/053967.html

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 SIP Response Code Denial of Service

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