Advisory Details

April 4th, 2019

Microsoft Windows VBScript Array Uninitialized Pointer Remote Code Execution Vulnerability

ZDI-19-332
ZDI-CAN-7817

CVE ID CVE-2019-0667
CVSS SCORE 7.5, AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Windows
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft VBScript. 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 handling of arrays. By performing actions in VBScript, an attacker can trigger access to a pointer prior to initialization. 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-2019-0667
DISCLOSURE TIMELINE
  • 2019-01-11 - Vulnerability reported to vendor
  • 2019-04-04 - Coordinated public release of advisory
CREDIT Anonymous
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