Visual Basic for Applications (VBA) malformed document buffer overflow

vba-document-bo (13092) The risk level is classified as HighHigh Risk

Description:

Visual Basic for Applications (VBA) is vulnerable to a buffer overflow, caused by improper bounds checking of user-supplied input. A remote attacker could create a specially-crafted document that supports VBA to overflow a buffer and execute arbitrary code on the system with privileges of the victim, once the document is opened. An attacker could exploit this vulnerability by hosting the malicious document on a Web page or by sending it to a victim in an email.

Note: A user would only need to reply to or forward the malicious document sent to them for this vulnerability to be exploited, if Microsoft Word is being used as the HTML email editor in Outlook, which is the default setting for Microsoft Office XP.


Consequences:

Gain Access

Remedy:

Apply the appropriate patch for your system, as listed in the latest Microsoft Security Bulletin. See References.

— OR —

Use Microsoft Automatic Update if it is supported by your operating system. The original bulletin issued by Microsoft has been superseded.

References:

Platforms Affected:

  • Microsoft Access 2000
  • Microsoft Access 2002
  • Microsoft Access 97
  • Microsoft Business Solutions Dynamics 6.0
  • Microsoft Business Solutions Dynamics 7.0
  • Microsoft Business Solutions eEnterprise 6.0
  • Microsoft Business Solutions eEnterprise 7.0
  • Microsoft Business Solutions Great Plains 7.5
  • Microsoft Business Solutions Solomon 4.5
  • Microsoft Business Solutions Solomon 5.0
  • Microsoft Business Solutions Solomon 5.5
  • Microsoft Excel 2000
  • Microsoft Excel 2002
  • Microsoft Excel 97
  • Microsoft PowerPoint 2000
  • Microsoft PowerPoint 2002
  • Microsoft PowerPoint 97
  • Microsoft Project 2000
  • Microsoft Project 2002
  • Microsoft Publisher 2002
  • Microsoft Visio 2000
  • Microsoft Visio 2002
  • Microsoft Visual Basic 5.0
  • Microsoft Visual Basic 6.0
  • Microsoft Visual Basic 6.2
  • Microsoft Visual Basic 6.3
  • Microsoft Windows 2003 Server
  • Microsoft Word 2000
  • Microsoft Word 2002
  • Microsoft Word 97
  • Microsoft Word 98 ja
  • Microsoft Works 2001
  • Microsoft Works 2002
  • Microsoft Works 2003

Reported:

Sep 03, 2003

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