Rewterz Threat Advisory – Multiple Microsoft Windows Vulnerabilities Exploited in the Wild

Severity

High

Analysis Summary

CVE-2023-21823 CVSS:7.8

Microsoft Windows could allow a local authenticated attacker to gain elevated privileges on the system, caused by a flaw in the Graphics Component. By executing a specially-crafted program, an authenticated attacker could exploit this vulnerability to gain SYSTEM privileges.

CVE-2023-23376 CVSS:7.8

Microsoft Windows could allow a local authenticated attacker to gain elevated privileges on the system, caused by a flaw in the Common Log File System Driver. By executing a specially-crafted program, an authenticated attacker could exploit this vulnerability to gain SYSTEM privileges.

Impact

• Privilege Escalation

Indicators Of Compromise

CVE

• CVE-2023-21823
• CVE-2023-23376

Affected Vendors

Microsoft

Affected Products

• Microsoft Windows Server 2012
• Microsoft Windows Server 2012 R2
• Microsoft Windows 10 x32
• Microsoft Windows 10 x64
• Microsoft Windows Server 2016
• Microsoft Windows Server 2019
• Microsoft Windows 10 1809 for x64-based Systems
• Microsoft Windows 10 1607 for 32-bit Systems
• Microsoft Windows 10 1607 for x64-based Systems
• Microsoft Windows 10 20H2 for ARM64-based Systems
• Microsoft Windows 10 20H2 for x64-based Systems
• Microsoft Windows Server (Server Core installation) 2019
• Microsoft Windows Server (Server Core installation) 2016
• Microsoft Windows Server (Server Core installation) 2012 R2
• Microsoft Windows Server (Server Core installation) 2012
• Microsoft Windows Server for X64-based systems 2008 R2 SP1
• Microsoft Windows Server for X64-based systems (Server Core installation) 2008 SP2
• Microsoft Windows Server for 32-bit systems (Server Core installation) 2008 SP2
• Microsoft Windows Server for 32-bit systems 2008 SP2
• Microsoft Windows Server for X64-based systems (Server Core installation) 2008 R2 SP1
• Microsoft Windows 10 21H1 for 32-bit Systems
• Microsoft Windows 10 21H1 for ARM64-based Systems
• Microsoft Windows 10 21H1 for x64-based Systems
• Microsoft Windows Server 2022
• Microsoft Windows Server for X64-based systems 2008 SP2
• Microsoft Windows 10 21H2 for 32-bit Systems
• Microsoft Windows 11 22H2 for ARM64-based Systems
• Microsoft Windows 11 22H2 for x64-based Systems
• Microsoft Windows 10 22H2 for 32-bit Systems
• Microsoft Windows 10 22H2 for ARM64-based Systems
• Microsoft Windows 10 22H2 for x64-based Systems
• Microsoft Windows 11 21H2 for ARM64-based Systems
• Microsoft Windows 11 21H2 for x64-based Systems

Remediation

Use Microsoft Automatic Update to apply the appropriate patch for your system, or the Microsoft Security Update Guide to search for available patches.

Microsoft Security TechCenter