Buffer overflow vulnerability in Microsoft Works converters


Microsoft Works converters contain a buffer overflow vulnerability.

Microsoft Works converters contain a buffer overflow vulnerability when processing Works (.wps) files.

The security update for this vulnerability is contained in the Microsoft Security Bulletin Summary for June 2009.
For more information, refer to Microsoft's website.

Yuji Ukai of Fourteenforty Research Institute, Inc. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V2 Severity:
Base Metrics 6.8 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Medium
  • Authentication: None
  • Confidentiality Impact: Partial
  • Integrity Impact: Partial
  • Availability Impact: Partial
Affected Products

Microsoft Corporation
  • Microsoft Office 2007
  • Microsoft Office 2000
  • Microsoft Office 2003
  • Microsoft Office xp
  • Microsoft Works 8.5
  • Microsoft Works 9


If a user opens a malicious Works file, an attacker may execute arbitrary code.

[Update the software]
Update to latest version according to the information provided by Microsoft.
Vendor Information

Microsoft Corporation
  • Microsoft Security Bulletin : MS09-024
CWE (What is CWE?)

  1. Buffer Errors(CWE-119) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2009-1533

  1. JVN : JVN#70858401
  2. National Vulnerability Database (NVD) : CVE-2009-1533
  3. IPA SECURITY ALERTS : Security Alert for Vulnerability in Microsoft Works Converter
  4. US-CERT Cyber Security Alerts : SA09-160A
  5. US-CERT Technical Cyber Security Alert : TA09-160A
  6. Secunia Advisory : SA35371
  7. SecurityFocus : 35184
  8. VUPEN Security : VUPEN/ADV-2009-1543
Revision History

  • [2009/06/18]
      Web page published