Check Point Advisories

Microsoft Excel Modified Data Structure Stack Overflow (MS12-076; CVE-2012-2543)

Vulnerability
Protection

Check Point Reference:	CPAI-2012-795
Date Published:	13 Nov 2012
Severity:	Critical
Last Updated:	Wednesday 11 December, 2024
Source:	CVE-2012-2543
Protection Provided by:	Security Gateway R70 R71 R75
Who is Vulnerable?	Microsoft Excel 2007 Service Pack 2 Microsoft Excel 2007 Service Pack 3 Microsoft Excel 2010 Service Pack 1 (32-bit editions) Microsoft Excel 2010 Service Pack 1 (64-bit editions) Microsoft Office for Mac 2011 Microsoft Excel Viewer Microsoft Office Compatibility Pack Service Pack 2 Microsoft Office Compatibility Pack Service Pack 3
Vulnerability Description	A remote code execution vulnerability has been reported in Microsoft Excel.
Update/Patch Avaliable	Apply patches from: MS12-076
Vulnerability Details	The vulnerability is due to a memory corruption condition caused when Excel encounters a modified data structure. A remote attacker can exploit this issue by enticing a target user to open a specially crafted Excel file. Successful exploitation could allow an attacker to take complete control of the target.

Protection Overview

This protection will detect and block the transferring of specially crafted Excel files.

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, Protection tab and select the version of your choice.

Security Gateway R75 / R71 / R70

In the IPS tab, click Protections and find the Microsoft Excel Modified Data Structure Stack Overflow (MS12-076) protection using the Search tool and Edit the protection's settings.
Install policy on all modules.

SmartView Tracker will log the following entries:
Attack Name: Content Protection Violation
Attack Information: Microsoft Excel Modified Data Structure Stack Overflow (MS12-076)