SB2020090869 - Privilege escalation in Microsoft Windows

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2020-1159)

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

The vulnerability exists in the way that the StartTileData.dll handles file creation in protected locations. A local user can run a specially crafted program and execute arbitrary code on the system with elevated privileges.

2) Buffer overflow (CVE-ID: CVE-2020-1052)

The vulnerability allows a local user to escalate privilege so the system.

The vulnerability exists due to a boundary error in the ssdpsrv.dll when handling objects in memory. A local user can create a specially crafted application, trigger memory corruption and execute arbitrary code on the target system with elevated privileges.

3) Buffer overflow (CVE-ID: CVE-2020-1376)

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

The vulnerability exists due to a boundary error in fdSSDP.dll. A local user can run a specially crafted program to execute arbitrary code on the system with elevated privileges.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1159
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1052
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1376