Secunia CSI7
Advisories
Research
Forums
Create Profile
Our Commitment
Database
Search
Advisories by Product
Advisories by Vendor
Terminology
Report Vulnerability
Insecure Library Loading
Moderately critical

Asterisk SIP Channel Driver Denial of Service

-

Release Date:  2009-08-11    Views:  3,176

Secunia Advisory SA36227

Where:

From remote

Impact:

DoS

Solution Status:

Vendor Patch

CVE Reference(s):

Description


Some vulnerabilities have been reported in Asterisk, which can be exploited by malicious people to cause a DoS (Denial of Service).

The vulnerabilities are caused due to "sscanf()" being invoked without specifying a maximum width e.g. when processing SIP messages. This can be exploited to exhaust stack memory in the SIP stack network thread via overly long numeric strings in various fields of a message.

NOTE: According to the vendor this is only potentially exploitable in 1.6.1 and above.

The vulnerabilities are reported in the following products and versions:
* Asterisk Open Source 1.2.x versions prior to 1.2.34
* Asterisk Open Source 1.4.x versions prior to 1.4.26.1
* Asterisk Open Source 1.6.0.x versions prior to 1.6.0.12
* Asterisk Open Source 1.6.1.x versions prior to 1.6.1.4
* Asterisk Business Edition A.x.x versions
* Asterisk Business Edition versions prior to B.2.5.9
* Asterisk Business Edition C.2.x versions prior to C.2.4.1
* Asterisk Business Edition C.3.x versions prior to C.3.1
* s800i (Asterisk Appliance) 1.2.x versions prior to 1.3.0.3


Solution:
Asterisk Open Source:

Further details available to Secunia VIM customers

Provided and/or discovered by:
Mu Dynamics Research Team

Original Advisory:
Asterisk:
http://downloads.asterisk.org/pub/security/AST-2009-005.html

Mu Dynamics Research Team:
http://labs.mudynamics.com/advisories/MU-200908-01.txt

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 Channel Driver Denial of Service

No posts yet

-

You must be logged in to post a comment.



 Products Solutions Customers Partner Resources Company
 
 Corporate
Vulnerability Intelligence Manager (VIM)
Corporate Software Inspector (CSI)
Consumer
Personal Software Inspector (PSI)
Online Software Inspector (OSI)
 Industry
Compliance
Technology
Integration
 Customers
Testimonials
 VARS
MSSP
Technology Partners
References
 Factsheets
Reports
Webinars
Events
 About us
Careers
Memberships
Newsroom


 
© 2002-2014 Secunia ApS - Rued Langgaards Vej 8, 4th floor, DK-2300 Copenhagen, Denmark - +45 7020 5144
Terms & Conditions and Copyright - Privacy - Report Vulnerability