A Vulnerability in Microsoft Windows JET Database Engine Could Allow for Arbitrary Code Execution

ITS Advisory Number: 
2021-069
Date(s) Issued: 
Wednesday, May 19, 2021
Subject: 
A Vulnerability in Microsoft Windows JET Database Engine Could Allow for Arbitrary Code Execution
Overview: 

A vulnerability has been discovered in Microsoft Windows JET Database Engine that could allow for arbitrary code execution. Microsoft Windows JET Database Engine provides data access to various applications such as Microsoft Access, Microsoft Visual Basic, and third-party applications. Successful exploitation of this vulnerability could result in arbitrary code execution within the context of the application, an attacker gaining the same privileges as the logged-on user, or the bypassing of security restrictions. Depending on the permission associated with the application running the exploit, an attacker could then install programs; view, change, or delete data.

 

THREAT INTELLIGENCE:

There are no reports of this vulnerability being exploited in the wild.

 

Systems Affected: 
  • Microsoft Windows
RISK
GOVERNMENT
Large and medium government entities: 
High
Small government entities: 
High
BUSINESS
Large and medium business entities: 
High
Small business entities: 
High
Home Users: 
Low
Description: 

A vulnerability has been discovered in Microsoft Windows JET Database Engine that could allow for arbitrary code execution. This vulnerability can be exploited remotely if an attacker locates a vulnerable system. Microsoft Windows JET Database Engine is prone to a memory-corruption vulnerability because it fails to properly validate user-supplied data. An attacker can exploit this issue by enticing a victim to open specially crafted file or visit a specially crafted web page. An attacker can exploit this issue to execute arbitrary code in the context of the current process. Successful exploitation of this vulnerability could result in arbitrary code execution within the context of the application, an attacker gaining the same privileges as the logged-on user, or the bypassing of security restrictions. Depending on the permission associated with the application running the exploit, an attacker could then install programs; view, change, or delete data.

 

Actions: 
  • Run all software as a non-privileged user (one without administrative privileges) to diminish the effects of a successful attack.
  • Remind users not to visit un-trusted websites or follow links provided by unknown or un-trusted sources.
  • Inform and educate users regarding the threats posed by hypertext links contained in emails or attachments especially from un-trusted sources.
  • Apply the Principle of Least Privilege to all systems and services.