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Vulnerability of Microsoft Windows: privilege escalation via _SchRpcRegisterTask

Synthesis of the vulnerability 

An attacker can bypass restrictions via _SchRpcRegisterTask() of MS-Windows, in order to escalate his privileges.
Impacted systems: Windows 10, Windows 2008 R0, Windows 2008 R2, Windows 2012, Windows 2016, Windows 2019, Windows 7, Windows 8, Windows RT.
Severity of this alert: 2/4.
Creation date: 22/05/2019.
Références of this alert: CVE-2019-1069, VIGILANCE-VUL-29387, VU#119704.

Description of the vulnerability 

An attacker can bypass restrictions via _SchRpcRegisterTask() of MS-Windows, in order to escalate his privileges.

This vulnerability may actually be CVE-2019-0863 (see VIGILANCE-VUL-29301).
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This cybersecurity announce impacts software or systems such as Windows 10, Windows 2008 R0, Windows 2008 R2, Windows 2012, Windows 2016, Windows 2019, Windows 7, Windows 8, Windows RT.

Our Vigil@nce team determined that the severity of this threat alert is medium.

The trust level is of type confirmed by a trusted third party, with an origin of user shell.

A proof of concept or an attack tool is available, so your teams have to process this alert. An attacker with a technician ability can exploit this computer weakness alert.

Solutions for this threat 

Windows: patch of June 2019.
A patch is indicated in information sources.

Microsoft Windows: solution for _SchRpcRegisterTask.
The June 2019 patch is fixed: VIGILANCE-SOL-66218.
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