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Vulnerability of Windows: privilege escalation via RPC

Synthesis of the vulnerability 

A local attacker can bypass the authentication via RPC of Windows, in order to escalate his privileges.
Impacted products: Windows 2003, Windows 2008 R0, Windows 2008 R2, Windows 2012, Windows 7, Windows 8, Windows RT, Windows Vista.
Severity of this bulletin: 2/4.
Creation date: 15/07/2015.
Références of this threat: 3067505, CERTFR-2015-AVI-291, CVE-2015-2370, MS15-076, VIGILANCE-VUL-17367.

Description of the vulnerability 

The RPC (Remote Procedure Call) feature allows a process to query another process.

However, an attacker can use a DCE/RPC connection reflection, to bypass the authentication.

A local attacker can therefore bypass the authentication via RPC of Windows, in order to escalate his privileges.
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This computer vulnerability note impacts software or systems such as Windows 2003, Windows 2008 R0, Windows 2008 R2, Windows 2012, Windows 7, Windows 8, Windows RT, Windows Vista.

Our Vigil@nce team determined that the severity of this computer vulnerability announce is medium.

The trust level is of type confirmed by the editor, with an origin of user shell.

An attacker with a expert ability can exploit this cybersecurity announce.

Solutions for this threat 

Windows: patch for RPC.
A patch is available in information sources.
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