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Secunia Advisory SA24579

Asterisk SIP Response Code Denial of Service
Secunia Advisory SA24579
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Release Date 2007-03-22
Last Update 2007-04-25
   
Popularity 18,089 views
Comments 0 comments

Criticality level Less criticalLess critical
Impact DoS
Where From remote
Authentication level Available in Customer Area
   
Report reliability Available in Customer Area
Solution Status Vendor Patch
   
Systems affected Available in Customer Area
Approve distribution Available in Customer Area
   
Software:
Asterisk 1.x
Secunia CVSS Score Available in Customer Area
CVE Reference(s) CVE-2007-1594 CVSS available in Customer Area
  

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

Changelog
Further details available in Customer Area

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 in Customer Area


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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