SB2018121113 - Multiple vulnerabilities in Microsoft .NET Framework

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Code Injection (CVE-ID: CVE-2018-8540)

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.

2) Input validation error (CVE-ID: CVE-2018-8517)

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

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8540
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8517