Check Point Advisories

BrightStor ARCserve Backup Discovery Service Buffer Overflow (CVE-2005-2535)

Vulnerability
Protection

Check Point Reference:	CPAI-2005-193
Date Published:	1 Nov 2009
Severity:	Critical
Last Updated:	Monday 21 October, 2013
Source:
Industry Reference:	CVE-2005-2535
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	Computer Associates' BrightStor ARCserve Backup software offers data protection for distributed servers, clients, databases and applications. The Discovery Service is a component of this product. It is an information gathering service which automatically queries other computers on the network for information about any ARCserve Backup software that is installed on the remote target. A vulnerability has been reported in a component of Computer Associates' ARCserve Backup server products. The Discovery Service application is used to automatically gather information about ARCserve products on the local network. It is prone to a buffer overflow when receiving a specially crafted message. This flaw may allow a malicious user to perform a DoS attack or remotely inject and execute code on the the vulnerable system with system level privileges. In a simple attack case, aimed at creating a denial of service condition, the affected service will terminate. If the service is not set up to restart automatically, then the discovery functionality of the backup server will be unavailable following an attack. The discovery agent is used to automatically discover ARCserve backup software and agents on remote targets. Without this service, in order to have a centralized database and job management for multiple machines, a user will have to manually add this information to the main management server. In a more sophisticated attack scenario, where the malicious user is successful in injecting and executing supplied code, the behaviour of the system is dependent on the nature and intent of the injected 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 BrightStor ARCserve Backup Discovery Service 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: CA Products Enforcement Violation.
Attack Information: BrightStor ARCserve Backup Discovery service buffer overflow