SB2019100904 - Privilege escalation in Win32k.sys driver in Microsoft Windows

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Buffer overflow (CVE-ID: CVE-2019-1364)

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

The vulnerability exists due to a boundary error when processing objects in memory within the Windows kernel-mode driver win32k.sys. A local user can create a malicious application, launch it on the system and execute arbitrary code with SYSTEM privileges.

2) Buffer overflow (CVE-ID: CVE-2019-1362)

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

The vulnerability exists due to a boundary error when processing objects in memory within the Windows kernel-mode driver win32k.sys. A local user can create a malicious application, launch it on the system and execute arbitrary code with SYSTEM privileges.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1364
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1362