Check Point Advisories

Quest Software Big Brother Arbitrary File Deletion and Overwriting

Vulnerability
Protection

Check Point Reference:	CPAI-2011-378
Date Published:	16 Aug 2011
Severity:	Critical
Last Updated:	Tuesday 16 August, 2011
Source:
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	Two directory traversal vulnerabilities have been reported in Quest Software's Big Brother. Big Brother is a network monitoring software, which enables administrators to monitor their organization's network activity. These vulnerabilities exist due to improper input validation in the application when handling certain requests. A remote attacker can trigger these flaws by first connecting and then delivering malicious packets to an affected server. In a successful attack scenario, an attacker may be able to delete or overwrite files from the target system. File deletion may enable him to cause data loss, possibly resulting in a denial of service condition. By overwriting executable system files, the attacker may be able to leverage these vulnerabilities to execute arbitrary code on the affected system.

Protection Overview

This protection will detect and block attempts to transfer such malicious packets to the server.

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 Quest Software Big Brother Arbitrary File Deletion and Overwriting 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: Application Servers Protection Violation.
Attack Information: Quest Software Big Brother arbitrary file deletion and overwriting