Home Page | Skip to Navigation | Skip to Content | Skip to Search | Skip to Footer

Microsoft Excel SerAuxErrBar Heap Overflow (MS12-076; CVE-2012-1885)


Check Point Reference: CPAI-2012-402
Date Published:
Source: Microsoft Security Bulletin MS12-076
Industry Reference(s): CVE-2012-1885
Protection Provided by: Security Gateway
  • R70
  • R71
  • R75
Who is Vulnerable?
Microsoft Excel 2003 Service Pack 3
Microsoft Excel 2007 Service Pack 2 and Service Pack 3
Microsoft Excel 2010 Service Pack 1 (32-bit and 64-bit editions)
Microsoft Office 2008 for Mac
Microsoft Office for Mac 2011
Microsoft Office Compatibility Pack Service Pack 2 and Service Pack 3
Vulnerability Description
A remote code execution vulnerability has been reported in Microsoft Excel.
Update/Patch Available
Apply patches from: MS12-076
Vulnerability Details
The vulnerability is due to a memory allocation error. A remote attacker can exploit this issue by enticing a target user to open a specially crafted Excel file with an affected version of Microsoft Excel. Successful exploitation of this vulnerability could allow an attacker to take complete control of an affected system.

Protection Overview
This protection will detect and block the transferring of specially crafted XLS 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.

To configure the defense, select your product from the list below and follow the related protection steps.

Security Gateway R75 / R71 / R70

How Can I Protect My Network?

  1. In the IPS tab, click Protections and find the Microsoft Excel SerAuxErrBar Heap Overflow (MS12-076) protection using the Search tool and Edit the protection's settings.
  2. Install policy on all modules.

How Do I Know if My Network is Under Attack?
SmartView Tracker will log the following entries:
Attack Name: Content Protection Violation
Attack Information: Microsoft Excel SerAuxErrBar Heap Overflow (MS12-076)