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Category:   Application (VoIP)  >   Asterisk Vendors:   Digium (Linux Support Services)
Asterisk Stack Overflow in MGCP Implementation Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1016742
SecurityTracker URL:  http://securitytracker.com/id/1016742
CVE Reference:   CVE-2006-4345, CVE-2006-4346   (Links to External Site)
Updated:  Jun 5 2008
Original Entry Date:  Aug 23 2006
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 1.0.0 - 1.2.10
Description:   A vulnerability was reported in Asterisk. A remote user can execute arbitrary code on the target system.

A remote user can send a specially crafted audit endpoint (AUEP) response message to trigger a stack overflow in the MGCP implementation and execute arbitrary code on the target system.

Also, if an administrator uses a parameter that contains user-defined values as a filename input to the Record() function, code execution may be possible.

The vendor was notified on August 10, 2006.

The Mu Security research team discovered these vulnerabilities.

The original advisory is available at:

http://labs.musecurity.com/advisories/MU-200608-01.txt

Impact:   A remote user can execute arbitrary code on the target system.
Solution:   The vendor has issued a patch for the buffer overflow vulnerability, available at:

http://ftp.digium.com/pub/asterisk/asterisk-1.2.11-patch.gz

The report advises that users can protect against the Record() vulnerability by not using user-controlled variables (e.g., ${CALLERIDNAME}) as part of the filename argument.

Vendor URL:  www.asterisk.org/ (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   None.


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