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Proactive Defense: The Importance of Incident Response Planning in Cybersecurity
Rewterz Threat Alert – Gafgyt aka Bashlite Malware – Active IOCs
February 15, 2023
Rewterz Threat Advisory – Multiple Microsoft Windows Vulnerabilities Exploited in the Wild
February 15, 2023
Rewterz Threat Alert – Gafgyt aka Bashlite Malware – Active IOCs
February 15, 2023
Rewterz Threat Advisory – Multiple Microsoft Windows Vulnerabilities Exploited in the Wild
February 15, 2023
Severity
High
Analysis Summary
CVE-2023-21684 CVSS:8.8
Microsoft Windows could allow a remote authenticated attacker to execute arbitrary code on the system, caused by a flaw in the PostScript Printer Driver. By sending a specially-crafted request, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVE-2023-21685 CVSS:8.8
Microsoft Windows could allow a remote attacker to execute arbitrary code on the system, caused by a flaw in the WDAC OLE DB provider for SQL Server. By sending a specially-crafted request, an attacker could exploit this vulnerability to execute arbitrary code on the client.
CVE-2023-21686 CVSS:8.8
Microsoft Windows could allow a remote authenticated attacker to execute arbitrary code on the system, caused by a flaw in the WDAC OLE DB provider for SQL Server. By sending a specially-crafted request, an attacker could exploit this vulnerability to execute arbitrary code on the client.
CVE-2023-21687 CVSS:5.5
Microsoft Windows could allow a local authenticated attacker to obtain sensitive information, caused by a flaw in the HTTP.sys component. By sending a specially-crafted request, an attacker could exploit this vulnerability to obtain sensitive information from Kernel memory and use this information to launch further attacks against the affected system.
CVE-2023-21688 CVSS:7.8
Microsoft Windows could allow a local authenticated attacker to gain elevated privileges on the system, caused by a flaw in the NT OS Kernel. By executing a specially-crafted program, an authenticated attacker could exploit this vulnerability to gain SYSTEM privileges.
CVE-2023-21689 CVSS:9.8
Microsoft Windows could allow a remote attacker to execute arbitrary code on the system, caused by a flaw in the Protected Extensible Authentication Protocol (PEAP). By sending a specially-crafted request, an attacker could exploit this vulnerability to execute arbitrary code in the context of the server’s account.
CVE-2023-21690 CVSS:9.8
Microsoft Windows could allow a remote attacker to execute arbitrary code on the system, caused by a flaw in the Protected Extensible Authentication Protocol (PEAP). By sending a specially-crafted request, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVE-2023-21691 CVSS:7.5
Microsoft Windows could allow a remote attacker to obtain sensitive information, caused by a flaw in the Protected Extensible Authentication Protocol (PEAP). By sending a specially-crafted request, an attacker could exploit this vulnerability to obtain sensitive information from heap memory and then use this information to launch further attacks against the affected system.
CVE-2023-21692 CVSS:9.8
Microsoft Windows could allow a remote attacker to execute arbitrary code on the system, caused by a flaw in the Protected Extensible Authentication Protocol (PEAP). By sending a specially-crafted request, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVE-2023-21693 CVSS:7.5
Microsoft Windows could allow a remote authenticated attacker to obtain sensitive information, caused by a flaw in the PostScript Printer Driver component. By sending a specially-crafted request, an attacker could exploit this vulnerability to obtain sensitive information from heap memory and then use this information to launch further attacks against the affected system.
CVE-2023-21694 CVSS:6.8
Microsoft Windows could allow a remote authenticated attacker within the local network to execute arbitrary code on the system, caused by a flaw in the Fax Service. By sending a specially-crafted request, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVE-2023-21695 CVSS:7.5
Microsoft Windows could allow a remote authenticated attacker to execute arbitrary code on the system, caused by a flaw in the Protected Extensible Authentication Protocol (PEAP). By sending specially-crafted PEAP packets, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVE-2023-21697 CVSS:6.2
Microsoft Windows could allow a local attacker to obtain sensitive information, caused by a flaw in the Internet Storage Name Service (iSNS) Server component. By sending a specially-crafted request, an attacker could exploit this vulnerability to obtain sensitive information from heap memory and then use this information to launch further attacks against the affected system.
CVE-2023-21699 CVSS:5.3
Microsoft Windows could allow a remote attacker to obtain sensitive information, caused by a flaw in the Internet Storage Name Service (iSNS) component. By sending a specially-crafted request, an attacker could exploit this vulnerability to obtain sensitive information from User Mode Service memory and then use this information to launch further attacks against the affected system.
CVE-2023-21700 CVSS:7.5
Microsoft Windows is vulnerable to a denial of service, caused by a flaw in the iSCSI Discovery Service component. By sending a specially-crafted request, a remote attacker could exploit this vulnerability to cause a denial of service.cv
Impact
- Code Execution
- Privilege Escalation
- Information Disclosure
- Denial of Service
Indicators Of Compromise
CVE
- CVE-2023-21684
- CVE-2023-21685
- CVE-2023-21686
- CVE-2023-21687
- CVE-2023-21688
- CVE-2023-21689
- CVE-2023-21690
- CVE-2023-21691
- CVE-2023-21692
- CVE-2023-21693
- CVE-2023-21694
- CVE-2023-21695
- CVE-2023-21697
- CVE-2023-21699
- CVE-2023-21700
Affected Vendors
Microsoft
Affected Products
- Microsoft Windows Server 2012
- Microsoft Windows Server 2016
- Microsoft Windows Server 2019
- Microsoft Windows RT 8.1
- Microsoft Windows 8.1 x32
- Microsoft Windows 10 x64
- Microsoft Windows 10 1809 for 32-bit Systems
- Microsoft Windows 10 1809 for x64-based Systems
- Microsoft Windows 10 1809 for ARM64-based Systems
- Microsoft Windows Server 2012 R2
- Microsoft Windows 7 SP1 x64
- Microsoft Windows 10 x32
- 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 2008 SP2
- Microsoft Windows Server (Server Core installation) 2022
- Microsoft Windows 8.1 x64
- Microsoft Windows 10 1607 for 32-bit Systems
- Microsoft Windows 10 1607 for x64-based Systems
- Microsoft Windows Server for 32-bit systems (Server Core installation) 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 11 x64
- Microsoft Windows 11 ARM64
- 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 Server for X64-based systems (Server Core installation) 2008 R2
- Microsoft Windows 11 x64 Microsoft Windows 11 ARM64
- Microsoft Windows 7 SP1 x32
- Microsoft Windows Server for X64-based systems 2008 R2 SP1 Microsoft Windows Server for 32-bit systems (Server Core installation) 2008 SP2
- Microsoft Windows 11 22H2 for ARM64-based Systems
- Microsoft Windows 11 22H2 for x64-based Systems
- 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 22H2 for x64-based Systems
- Microsoft Windows 10 22H2 for 32-bit Systems
- Microsoft Windows 10 22H2 for ARM64-based Systems
- Microsoft Windows Server (Server Core installation) 22H2
- 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.
