Check Point Advisories

Sun Java Runtime AWT setDifflCM Stack Buffer Overflow (CVE-2009-3869)

Check Point Reference: CPAI-2009-444
Date Published: 12 Dec 2010
Severity: Medium
Last Updated: Sunday 12 December, 2010
Source:
Industry Reference:CVE-2009-3869
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description Java Technology is a programing platform developed by Sun Microsystems which aims to provide a system for developing and deploying cross-platform applications. Java is used in a wide variety programs that are deployed on personal computers as well as embedded devices and cell phones. Java technology is distributed in the form of various tools such as Java Runtime Environment (JRE) and Java Development Kit (JDK). A buffer overflow vulnerability exists in Sun's Java Runtime Environment. Specifically, the vulnerability is due to a flaw that exists in the processing of arguments to the setDiffICM AWT library function. Due to the lack of bounds checking on one of the parameters to the function, a stack buffer overflow can occur. This error may be exploited by remote unauthenticated attackers to execute arbitrary code on the target system by enticing the user to visit a malicious web page. Successful exploitation could result in execution of arbitrary code within the security context of the currently logged on user. An unsuccessful exploit attempt may terminate the affected application abnormally.

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

  1. In the IPS tab, click Protections and find the Sun Java Runtime AWT setDifflCM Stack Buffer Overflow protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  Web Client Enforcement Violation.
Attack Information:  Sun Java Runtime AWT setDifflCM stack buffer overflow

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