Check Point Advisories

RealNetworks RealPlayer RealText Parsing Buffer Overflow (CVE-2005-1766)

Vulnerability
Protection

Check Point Reference:	CPAI-2005-260
Date Published:	7 Oct 2009
Severity:	High
Last Updated:	Wednesday 07 October, 2009
Source:
Industry Reference:	CVE-2005-1766
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	RealPlayer is a media player developed by RealNetworks, Inc. It supports a streaming text technology called RealText to create presentations that include text content. RealText can stream documents consisting of purely text or closed-captioned video clips, for example. The RealText resources are usually named with the file extension .rt. There exists a heap based buffer overflow vulnerability in RealNetworks RealPlayer. The flaw exists in the RealText format parser. An attacker can exploit this vulnerability to inject and execute arbitrary code on the target system. Any injected code would execute with the privileges of the currently logged in user. In an unsuccessful attack case, the vulnerable target application will display a message box to notify the user that an unrecognized version has been indicated in the RealText file. The vulnerable application may also unexpectedly terminate as a result. Note that the termination of the vulnerable application is not a certain occurrence, as the overflow concerns a heap based buffer. In a successful attack scenario, arbitrary code may be injected and executed on the target system. In such a case, the behaviour of the target system is dependent on the intent of the malicious 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 RealNetworks RealPlayer RealText Parsing 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: Media Player Enforcement Violation.
Attack Information: RealNetworks RealPlayer RealText parsing buffer overflow