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
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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: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No

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


CPE2.3 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

CVSSv3.1:

CVE-ID: CVE-2018-8517

CWE-ID: CWE-20 - Improper Input Validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to an error when .NET Framework improperly handles special web requests. A remote attacker can issue a specially crafted requests to the .NET Framework application and cause the service to crash

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft .NET Framework: 3.5 - 4.7.2


CPE2.3 External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8517

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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