SB2019031315 - Denial of service in Microsoft Windows Hyper-V

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Input validation error (CVE-ID: CVE-2019-0701)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input when Microsoft Hyper-V on a host server does not properly validate input from a privileged user on a guest operating system.

Successful exploitation of the vulnerability may result denial of service (DoS) attack against the host system.

2) Input validation error (CVE-ID: CVE-2019-0695)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input when Microsoft Hyper-V on a host server does not properly validate input from a privileged user on a guest operating system.

Successful exploitation of the vulnerability may result denial of service (DoS) attack against the host system.

3) Input validation error (CVE-ID: CVE-2019-0690)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input when Microsoft Hyper-V Network Switch on a host server does not properly validate input from a privileged user on a guest operating system.

Successful exploitation of the vulnerability may result denial of service (DoS) attack against the host system.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0701
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0695
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0690