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Secunia Advisory SA26601

Asterisk Voicemail IMAP Backend Invalid MIME Denial of Service
Secunia Advisory SA26601
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Release Date 2007-08-27
   
Popularity 10,042 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 Workaround
   
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-2007-4521 CVSS available in Customer Area
  

Description

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

The vulnerability is caused due to an error when handling emails with a malformed MIME body. This can be exploited to crash the service by sending a specially crafted email to a user and tricking him into listening to the voicemail.

Successful exploitation requires that the IMAP backend for the voicemail feature is used. Reportedly, other backends are not affected.

The vulnerability is reported in version 1.4.5 - 1.4.11. Other versions may also be affected.


Solution
Reportedly, this will be fixed in version 1.4.12.
Further details available in Customer Area

Provided and/or discovered by
The vendor credits Kevin Stewart.

Original Advisory
http://downloads.digium.com/pub/asa/AST-2007-021.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 Voicemail IMAP Backend Invalid MIME Denial of Service
 
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