SB2018100922 - Privilege escalation in Microsoft Windows Hyper-V

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Improper input validation (CVE-ID: CVE-2018-8489)

The vulnerability allows an adjacent attacker to compromise vulnerable host operating system.

The vulnerability exists in Windows Hyper-V on a host server due to improper validation of input from an authenticated user on a guest operating system. A remote attacker with access to guest operating system can run a specially crafted application and compromise the host system.

2) Improper input validation (CVE-ID: CVE-2018-8490)

The vulnerability allows an adjacent attacker to compromise vulnerable host operating system.

The vulnerability exists in Windows Hyper-V on a host server due to improper validation of input from an authenticated user on a guest operating system. A remote attacker with access to guest operating system can run a specially crafted application and compromise the host system.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8489
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8490