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Microsoft Windows JET Database Engine Improper Validation of Array Index Remote Code Execution Vulnerability

July 2nd, 2019

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Microsoft Windows. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the JET database engine. The issue results from the lack of proper validation of user-supplied data, which can result in memory access past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

Additional Details

Microsoft has issued an update to correct this vulnerability. More details can be found at:
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0906

Disclosure Timeline

  • 2019-02-07 - Vulnerability reported to vendor
  • 2019-07-02 - Coordinated public release of advisory

Credit

rgod of 9sg Security Team - rgod@9sgsec.com

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