Vulnerability Note VU#882841

Microsoft Office file format converter memory corruption vulnerability

Original Release date: 10 Apr 2014 | Last revised: 10 Apr 2014

Overview

The Microsoft Office file format converter contains a memory corruption vulnerability, which may allow a remote, unauthenticated attacker to execute arbitrary code with the privileges of the user.

Description

Microsoft Office file format converter is a component that converts legacy Microsoft Office documents into newer file formats. Microsoft Office Isolated Conversion Environment (MOICE), which is intended to increase the security of Microsoft Office, uses this capability. The Microsoft Office file format converter contains a memory corruption vulnerability.

Impact

By convincing a user to open a specially-crafted Office document, a remote, unauthenticated attacker may be able to execute arbitrary code with the privileges of the user.

Solution

Apply an update

This issue is addressed in Microsoft Security Bulletin MS14-017. Please also consider the following workarounds:

Use the Microsoft Enhanced Mitigation Experience Toolkit

The Microsoft Enhanced Mitigation Experience Toolkit (EMET) can be used to help prevent exploitation of this vulnerability. CERT/CC has created a video tutorial for setting up EMET 3.0 on Windows 7. Note that platforms that do not support ASLR, such as Windows XP and Windows Server 2003, will not receive the same level of protection that modern Windows platforms will.

Vendor Information (Learn More)

VendorStatusDate NotifiedDate Updated
Microsoft CorporationAffected11 Sep 201310 Apr 2014
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group Score Vector
Base 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C
Temporal 7.8 E:POC/RL:OF/RC:C
Environmental 5.9 CDP:ND/TD:M/CR:ND/IR:ND/AR:ND

References

Credit

This issue was reported by Will Dormann of the CERT/CC.

This document was written by Will Dormann.

Other Information

  • CVE IDs: CVE-2014-1757
  • Date Public: 08 Apr 2014
  • Date First Published: 10 Apr 2014
  • Date Last Updated: 10 Apr 2014
  • Document Revision: 6

Feedback

If you have feedback, comments, or additional information about this vulnerability, please send us email.