Security restrictions bypass in Microsoft .NET Framework and ASP.NET Core MVC - CVE-2018-8356

 

Security restrictions bypass in Microsoft .NET Framework and ASP.NET Core MVC - CVE-2018-8356

Published: July 10, 2018 / Updated: July 10, 2018


Vulnerability identifier: #VU13769
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2018-8356
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Microsoft
Affected software:
Microsoft .NET Framework
ASP.NET Core MVC

Detailed vulnerability description

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The vulnerability exists due to  improper validation of certificates by .NET Framework components. A remote unauthenticated attacker can present expired certificates when challenged and bypass security restrictions to conduct further attacks.


How to mitigate CVE-2018-8356

Install updates from vendor's website.

Sources