Microsoft’s April 2023 Patch Tuesday Addresses 97 CVEs

On April 11, Microsoft released its April 2023 Patch Tuesday release, addressing 97 CVEs with seven rated as critical and 90 rated as important.

This month’s release includes a fix for CVE-2023-28252, an elevation of privilege (EoP) vulnerability in Microsoft Windows Common Log File System (CLFS) Driver that was exploited in the wild as a zero day. It is a post-compromise flaw, meaning an attacker could exploit it after gaining access to a vulnerable target. It is the second CLFS EoP vulnerability disclosed in 2023, and the fourth in the last two years.

This month’s update includes patches for:

• .NET Core
• Azure Machine Learning
• Azure Service Connector
• Microsoft Bluetooth Driver
• Microsoft Defender for Endpoint
• Microsoft Dynamics
• Microsoft Dynamics 365 Customer Voice
• Microsoft Edge (Chromium-based)
• Microsoft Graphics Component
• Microsoft Message Queuing
• Microsoft Office
• Microsoft Office Publisher
• Microsoft Office SharePoint
• Microsoft Office Word
• Microsoft PostScript Printer Driver
• Microsoft Printer Drivers
• Microsoft WDAC OLE DB provider for SQL
• Microsoft Windows DNS
• Visual Studio
• Visual Studio Code
• Windows Active Directory
• Windows ALPC
• Windows Ancillary Function Driver for WinSock
• Windows Boot Manager
• Windows Clip Service
• Windows CNG Key Isolation Service
• Windows Common Log File System Driver
• Windows DHCP Server
• Windows Enroll Engine
• Windows Error Reporting
• Windows Group Policy
• Windows Internet Key Exchange (IKE) Protocol
• Windows Kerberos
• Windows Kernel
• Windows Layer 2 Tunneling Protocol
• Windows Lock Screen
• Windows Netlogon
• Windows Network Address Translation (NAT)
• Windows Network File System
• Windows Network Load Balancing
• Windows NTLM
• Windows PGM
• Windows Point-to-Point Protocol over Ethernet (PPPoE)
• Windows Point-to-Point Tunneling Protocol
• Windows Raw Image Extension
• Windows RDP Client
• Windows Registry
• Windows RPC API
• Windows Secure Boot
• Windows Secure Channel
• Windows Secure Socket Tunneling Protocol (SSTP)
• Windows Transport Security Layer (TLS)
• Windows Win32K

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