Advisory Details

August 13th, 2019

Microsoft Windows CoreShellCOMServerRegistrar Improper Access Control Privilege Escalation Vulnerability

ZDI-19-706
ZDI-CAN-7715

CVE ID CVE-2019-1184
CVSS SCORE 8.8, AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Windows
VULNERABILITY DETAILS

This vulnerability allows local attackers to escalate privileges on affected installations of Microsoft Windows. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within the Core Shell COM Server Registrar application. By invoking a method of this DCOM component, an attacker can escalate privileges and execute arbitrary code in the context of the current user at medium integrity.

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-2019-1184
DISCLOSURE TIMELINE
  • 2019-01-25 - Vulnerability reported to vendor
  • 2019-08-13 - Coordinated public release of advisory
CREDIT Anonymous
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