Check Point Advisories

GNU wget HTTP Redirect Arbitrary File Overwrite (CVE-2016-4971)

Vulnerability
Protection

Check Point Reference:	CPAI-2016-0566
Date Published:	6 Jul 2016
Severity:	Critical
Last Updated:	Sunday 10 July, 2016
Source:
Industry Reference:	CVE-2016-4971
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	GNU wget prior to 1.17
Vulnerability Description	An arbitrary file overwrite vulnerability has been reported in the GNU wget. The vulnerability is due to wget trusting the filename provided by an FTP server when the original request is redirected from an HTTP server. A remote attacker can exploit this vulnerability by enticing a user to request a file over HTTP and sending an HTTP redirect to an FTP location hosting a malicious file intended to overwrite a user file.

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 GNU wget HTTP Redirect Arbitrary File Overwrite 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 Client Enforcement Violation.
Attack Information: GNU wget HTTP Redirect Arbitrary File Overwrite