March 12, 2025
Proactive Defense: The Importance of Incident Response Planning in Cybersecurity
Rewterz Threat Advisory – Multiple Microsoft Windows Layer 2 Tunneling Protocol (L2TP) Vulnerabilities
January 17, 2023Rewterz Threat Advisory – Multiple Windows Cryptographic Vulnerabilities
January 17, 2023Rewterz Threat Advisory – Multiple Microsoft Windows Layer 2 Tunneling Protocol (L2TP) Vulnerabilities
January 17, 2023Rewterz Threat Advisory – Multiple Windows Cryptographic Vulnerabilities
January 17, 2023
Severity
High
Analysis Summary
CVE-2023-21677 CVSS:7.5
Microsoft Windows is vulnerable to a denial of service, caused by a flaw in the Internet Key Exchange (IKE) Extension. By sending a specially-crafted request, a remote attacker could exploit this vulnerability to cause a denial of service condition.
CVE-2023-21683 CVSS:7.5
Microsoft Windows is vulnerable to a denial of service, caused by a flaw in the Internet Key Exchange (IKE) Extension. By sending a specially-crafted request, a remote attacker could exploit this vulnerability to cause a denial of service condition.
CVE-2023-21758 CVSS:7.5
Microsoft Windows is vulnerable to a denial of service, caused by a flaw in the Internet Key Exchange (IKE) Extension. By sending a specially-crafted request, a remote attacker could exploit this vulnerability to cause a denial of service condition.
Impact
- Denial of Service
Indicators Of Compromise
CVE
- CVE-2023-21677
- CVE-2023-21683
- CVE-2023-21758
Affected Vendors
Microsoft
Affected Products
- 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
- Microsoft Windows Server 2022
- Microsoft Windows Server (Server Core installation) 2022
- 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 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
- Microsoft Windows 10 22H2 for ARM64-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.