SB2020041403 - Multiple vulnerabilities in Microsoft Windows Hyper-V

Description

This security bulletin contains information about 3 vulnerabilities.

1) Input validation error (CVE-ID: CVE-2020-0910)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Green

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

The vulnerability exists due to insufficient validation of user-supplied input in the Windows Hyper-V on a host server. A remote administrator on the local network can run a specially crafted application on a guest operating system and execute arbitrary code.

2) Buffer overflow (CVE-ID: CVE-2020-0917)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Green

The vulnerability allows a remote user to escalate privileges on the target system.

The vulnerability exists due to a boundary error in the Windows Hyper-V on a host server. A remote administrator on the local network can trigger memory corruption and gain elevated privileges on a target operating system.

3) Buffer overflow (CVE-ID: CVE-2020-0918)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote user to escalate privileges on the target system.

The vulnerability exists due to a boundary error in the Windows Hyper-V on a host server. A remote administrator on the local network can trigger memory corruption and gain elevated privileges on a target operating system.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0910
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0917
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0918