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Category:   Application (VoIP)  >   Asterisk Vendors:   Digium (Linux Support Services)
Asterisk Buffer Overflow in Processing CDR User Data Lets Remote Authenticated Users Execute Arbitrary Code
SecurityTracker Alert ID:  1038175
SecurityTracker URL:  http://securitytracker.com/id/1038175
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Apr 4 2017
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 13.x, 14.x
Description:   A vulnerability was reported in Asterisk. A remote authenticated user can execute arbitrary code on the target system.

A remote authenticated user can send specially crafted CDR user data to trigger a buffer overflow and execute arbitrary code on the target system.

System using CDRs and the 'X-ClientCode' header within a SIP INFO message when using chan_sip and the 'useclientcode' option is enabled, the CDR dialplan function executed from AMI when setting the user field, and the AMI Monitor action when using a long file name/path are affected.

Alex Villacis Lasso reported this vulnerability.

Impact:   A remote authenticated user can execute arbitrary code on the target system.
Solution:   The vendor has issued a fix (13.14.1, 14.3.1).

The vendor advisory is available at:

http://downloads.digium.com/pub/security/AST-2017-001.html

Vendor URL:  downloads.digium.com/pub/security/AST-2017-001.html (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   None.


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