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Category:   Application (VoIP)  >   Asterisk Vendors:   Digium (Linux Support Services)
Asterisk Buffer Overflow in Manager Interface Lets Remote Authenticated Users Execute Arbitrary Code
SecurityTracker Alert ID:  1014268
SecurityTracker URL:  http://securitytracker.com/id/1014268
CVE Reference:   CVE-2005-2081   (Links to External Site)
Updated:  Jul 2 2005
Original Entry Date:  Jun 22 2005
Impact:   Execution of arbitrary code via network, Root access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 1.0.7
Description:   A vulnerability was reported in Asterisk in the manager interface. A remote authenticated user can execute arbitrary code on the target system.

A remote authenticated user can supply a specially crafted command string to trigger a stack overflow and execute arbitrary code. The code will (typically) run with root privileges.

A command string composed two double quote characters followed by a tab character, with this sequence repeating, can trigger the flaw.

The manager interface is not enabled by default.

The vendor was notified on May 19, 2005.

Wade Alcorn from Portcullis discovered this vulnerability.

The original advisory is available at:

http://www.portcullis-security.com/advisory/advisory-05-013.txt

Impact:   A remote authenticated user can execute arbitrary code on the target system with root privileges.
Solution:   The vendor has issued a fixed version (1.0.8), available at:

http://www.asterisk.org/index.php?menu=download

As a workaround, the manager interface can be disabled via the 'manager.conf' file.

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

Message History:   None.


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