Check Point Advisories

CGI Namespace Conflict Man-In-The-Middle (httpoxy; CVE-2016-1000109; CVE-2016-1000110; CVE-2016-5385; CVE-2016-5386; CVE-2016-5387; CVE-2016-5388)

Vulnerability
Protection

Check Point Reference:	CPAI-2016-0607
Date Published:	19 Jul 2016
Severity:	Critical
Last Updated:	Monday 01 August, 2016
Source:
Industry Reference:	CVE-2016-1000109 CVE-2016-1000110 CVE-2016-5385 CVE-2016-5386 CVE-2016-5387 CVE-2016-5388
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Application code running in CGI, or CGI-like environments.
Vulnerability Description	Namespace conflict related to HTTP proxy headers allows an attacker to configure the HTTP_PROXY environment variable. A successful exploitation might allow an attacker to launch a man-in-the-middle attack and redirect traffic to an arbitrary host.

Protection Overview

This protection detects 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 CGI Namespace Conflict Man-In-The-Middle (httpoxy) 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: CGI Namespace Conflict Man-In-The-Middle (httpoxy)