Multiple vulnerabilities in Microsoft .NET Framework

Published: 2018-12-11

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2018-8540 CVE-2018-8517
CWE-ID	CWE-94 CWE-20
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #2 is available.
Vulnerable software Subscribe	Microsoft .NET Framework Server applications / Frameworks for developing and running applications
Vendor	Microsoft

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Code Injection

EUVDB-ID: #VU16472

Risk: High

CVSSv3.1:

CVE-ID: CVE-2018-8540

CWE-ID:

Exploit availability:

Description

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

The vulnerability exists due to an error when the Microsoft .NET Framework fails to validate input properly. A remote attacker can pass specific input to an application utilizing susceptible .Net methods and execute arbitrary code on the target system.

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: 3.5 - 4.7.2

Fixed software versions

CPE2.3

cpe:2.3:a:microsoft:microsoft_net_framework:4.5.2:*:*:*:*:*:*:*

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8540

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

2) Input validation error

EUVDB-ID: #VU16473

Risk: Low