#VU13766 Improper input validation in Microsoft .NET Framework - CVE-2018-8284

Vulnerability identifier: #VU13766

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2018-8284

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Microsoft .NET Framework
Server applications / Frameworks for developing and running applications

Vendor: Microsoft

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation by the Microsoft .NET Framework. A remote unauthenticated attacker can pass specific input to an application utilizing susceptible .Net methods, inject and execute arbitrary code with elevated privileges.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft .NET Framework: 2.0, 3.0, 3.5 - 3.5.1, 4.5.2, 4.6 - 4.6.2, 4.7 - 4.7.2

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External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8284

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.