Check Point Advisories

Mozilla Firefox Memory Corruption (CVE-2010-3765)

Vulnerability
Protection

Check Point Reference:	CPAI-2010-0853
Date Published:	9 Mar 2011
Severity:	Critical
Last Updated:	Sunday 12 October, 2025
Source:
Industry Reference:	CVE-2010-3765
Protection Provided by:	Security Gateway R82, R81, R80, R77, R75
Who is Vulnerable?	Mozilla Firefox 3.5.0 to 3.5.14 Mozilla Firefox 3.6.0 to 3.6.11 Mozilla Thunderbird 3.1.1 to 3.1.5 Mozilla Thunderbird 3.0.1 to 3.0.9 Mozilla SeaMonkey 2.0 to 2.0.9
Vulnerability Description	Mozilla Firefox is a web browser developed by Mozilla Foundation. A memory corruption vulnerability has been reported in Mozilla Firefox. The vulnerability is due to a buffer overflow in Mozilla Firefox while executing specially crafted JavaScript call document.write() combined with DOM insertions. A remote attacker can exploit this vulnerability by enticing a user to visit a specially crafted web page. Successful exploitation of this vulnerability will crash the browser, and may allow execution of arbitrary code on the vulnerable system.

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 R82 / R81 / R80 / R77 / R75

In the IPS tab, click Protections and find the Mozilla Firefox Memory Corruption (CVE-2010-3765) 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: Mozilla Firefox Memory Corruption (CVE-2010-3765)