SB2018041036 - Information disclosure in Microsoft Hyper-V

Description

This security bulletin contains information about 2 vulnerabilities.

1) Improper input validation (CVE-ID: CVE-2018-0957)

CWE-ID: CWE-20 - Improper input validation

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

The vulnerability allows a quest user to gain access to potentially sensitive information.

The vulnerability exists due to an input validation error in Windows Hyper-V. An authenticated user of guest operating system can obtain memory information from host system.

2) Improper input validation (CVE-ID: CVE-2018-0964)

CWE-ID: CWE-20 - Improper input validation

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

The vulnerability allows a quest user to gain access to potentially sensitive information.

The vulnerability exists due to an input validation error in Windows Hyper-V. An authenticated user of guest operating system can obtain memory information from host system.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0957
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0964