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Severity
High
Analysis Summary
CVE-2023-21548 CVSS:8.1
Microsoft Windows could allow a remote attacker to execute arbitrary code on the system, caused by a flaw in the Secure Socket Tunneling Protocol (SSTP). By sending a specially-crafted SSTP packet to an SSTP server, an attacker could exploit this vulnerability to execute arbitrary code on the server side.
CVE-2023-21535 CVSS:8.1
Microsoft Windows could allow a remote attacker to execute arbitrary code on the system, caused by a flaw in the Secure Socket Tunneling Protocol (SSTP). By sending a specially-crafted request to a RAS server, an attacker could exploit this vulnerability to execute arbitrary code on the RAS server machine.
Impact
- Code Execution
Indicators Of Compromise
CVE
- CVE-2023-21548
- CVE-2023-21535
Affected Vendors
Microsoft
Affected Products
- Microsoft Windows 7 SP1 x32
- Microsoft Windows 7 SP1 x64
- Microsoft Windows Server 2012
- Microsoft Windows 8.1 x32
- Microsoft Windows 8.1 x64
- Microsoft Windows Server 2012 R2
- Microsoft Windows RT 8.1
- 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 1809 for 32-bit Systems
- Microsoft Windows 10 1809 for ARM64-based Systems
- Microsoft Windows 10 1607 for 32-bit Systems
- Microsoft Windows 10 1607 for x64-based Systems
- Microsoft Windows 10 20H2 for 32-bit 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 Server 2022Microsoft Windows Server (Server Core installation) 2022
- Microsoft Windows Server for X64-based systems 2008 SP2
- Microsoft Windows 10 21H2 for 32-bit Systems
- Microsoft Windows 10 21H2 for ARM64-based Systems
- Microsoft Windows 10 21H2 for x64-based 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 Server 2022 Datacenter: Azure Edition
- 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.