SB2020081115 - Multiple vulnerabilities in Microsoft Windows Kernel

Description

This security bulletin contains information about 4 secuirty vulnerabilities.

1) Buffer overflow (CVE-ID: CVE-2020-1417)

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. A local user can create a malicious application, launch it on the system and execute arbitrary code with SYSTEM privileges.

2) Out-of-bounds read (CVE-ID: CVE-2020-1578)

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

The vulnerability exists due to a boundary condition in the Windows kernel. A local user can use a specially crafted application, trigger out-of-bounds read error and read contents of memory on the system.

3) Buffer overflow (CVE-ID: CVE-2020-1486)

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. A local user can create a malicious application, launch it on the system and execute arbitrary code with SYSTEM privileges.

4) Buffer overflow (CVE-ID: CVE-2020-1566)

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. 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-2020-1417
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1578
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1486
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1566