SB2022101214 - Multiple vulnerabilities in Microsoft Windows DHCP Client

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Buffer overflow (CVE-ID: CVE-2022-37980)

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

The vulnerability exists due to a boundary error within the Windows DHCP Client service. A local user can send a specially crafted RPC call to the DHCP service, trigger memory corruption and execute arbitrary code with SYSTEM privileges.

2) Information disclosure (CVE-ID: CVE-2022-38026)

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

The vulnerability exists due to excessive data output in Windows DHCP Client. A local user can read User Mode Service Memory.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-37980
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-38026