Check Point Advisories

Digium Asterisk Management Interface Out-of-Bounds Stack Buffer Overflow

Vulnerability
Protection

Check Point Reference:	CPAI-2012-226
Date Published:	18 Jun 2012
Severity:	Critical
Last Updated:	Tuesday 19 August, 2014
Source:
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	A buffer overflow vulnerability has been reported in Digium Asterisk. The vulnerability is due to a bounds checking error while handling certain headers. A remote attacker may exploit this vulnerability by sending a specially crafted HTTP request to a vulnerable server. Successful exploitation would allow an attacker to execute arbitrary code.

Protection Overview

This protection will detect and block attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75

In the IPS tab, click Protections and find the Digium Asterisk Management Interface Out-of-Bounds Stack Buffer Overflow protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Web Server Enforcement Violation.
Attack Information: Digium Asterisk Management Interface out-of-bounds stack buffer overflow