Microsoft .NET Framework Device Guard CVE-2018-1039 Local Security Bypass Vulnerability

Description

Microsoft .NET Framework Device Guard is prone to a local security-bypass vulnerability. An attacker can exploit this issue to bypass certain security restrictions and perform unauthorized actions. This may aid in further attacks.

Technologies Affected

• Microsoft .NET Framework 2.0 SP2
• Microsoft .NET Framework 3.0 SP2
• Microsoft .NET Framework 3.5
• Microsoft .NET Framework 3.5.1
• Microsoft .NET Framework 4.5.2
• Microsoft .NET Framework 4.6
• Microsoft .NET Framework 4.6.1
• Microsoft .NET Framework 4.6.2
• Microsoft .NET Framework 4.7
• Microsoft .NET Framework 4.7.1

Recommendations

Configure webservers to serve only specific, defined file types.
To exploit this vulnerability, an attacker requires local access to an affected computer. Grant local access for trusted and accountable users only.

Updates are available. Please see the references or vendor advisory for more information.