Rewterz Threat Advisory – Multiple Windows Cryptographic Vulnerabilities
January 17, 2023Rewterz Threat Alert – Phobos Ransomware – Active IOCs
January 17, 2023Severity
Medium
Analysis Summary
CVE-2023-21747 CVSS:7.8
Microsoft Windows could allow a local authenticated attacker to gain elevated privileges on the system, caused by a flaw in the Kernel. By executing a specially-crafted program, an authenticated attacker could exploit this vulnerability to obtain SYSTEM privileges.
CVE-2023-21773 CVSS:7.8
Microsoft Windows could allow a local authenticated attacker to gain elevated privileges on the system, caused by a flaw in the Kernel. By executing a specially-crafted program, an authenticated attacker could exploit this vulnerability to obtain SYSTEM privileges.
CVE-2023-21753 CVSS:5.5
Microsoft Windows could allow a local authenticated attacker to obtain sensitive information, caused by a flaw in the Kernel component. By executing a specially-crafted program, an attacker could exploit this vulnerability to obtain sensitive information from Kernel memory from a user mode process and then use this information to launch further attacks against the affected system.
CVE-2023-21776 CVSS:5.5
Microsoft Windows could allow a local authenticated attacker to obtain sensitive information, caused by a flaw in the Kernel component. By executing a specially-crafted program, an attacker could exploit this vulnerability to obtain sensitive information from Kernel memory and then use this information to launch further attacks against the affected system.
CVE-2023-21750 CVSS:7.1
Microsoft Windows could allow a local authenticated attacker to gain elevated privileges on the system, caused by a flaw in the Kernel. By executing a specially-crafted program, an authenticated attacker could exploit this vulnerability to obtain SYSTEM privileges.
CVE-2023-21675 CVSS:7.8
Microsoft Windows could allow a local authenticated attacker to gain elevated privileges on the system, caused by a flaw in the Kernel. By executing a specially-crafted program, an authenticated attacker could exploit this vulnerability to obtain SYSTEM privileges.
CVE-2023-21774 CVSS:7.8
Microsoft Windows could allow a local authenticated attacker to gain elevated privileges on the system, caused by a flaw in the Kernel. By executing a specially-crafted program, an authenticated attacker could exploit this vulnerability to obtain SYSTEM privileges.
CVE-2023-21749 CVSS:7.8
Microsoft Windows could allow a local authenticated attacker to gain elevated privileges on the system, caused by a flaw in the Kernel. By executing a specially-crafted program, an authenticated attacker could exploit this vulnerability to obtain SYSTEM privileges.
CVE-2023-21755 CVSS:7.8
Microsoft Windows could allow a local authenticated attacker to gain elevated privileges on the system, caused by a flaw in the Kernel. By executing a specially-crafted program, an authenticated attacker could exploit this vulnerability to obtain SYSTEM privileges.
CVE-2023-21772 CVSS:7.8
Microsoft Windows could allow a local authenticated attacker to gain elevated privileges on the system, caused by a flaw in the Kernel. By executing a specially-crafted program, an authenticated attacker could exploit this vulnerability to obtain SYSTEM privileges.
Impact
- Privilege Escalation
- Information Disclosure
Indicators Of Compromise
CVE
- CVE-2023-21747
- CVE-2023-21773
- CVE-2023-21753
- CVE-2023-21776
- CVE-2023-21750
- CVE-2023-21675
- CVE-2023-21774
- CVE-2023-21749
- CVE-2023-21755
- CVE-2023-21772
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 8.1Microsoft 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 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 SP2Microsoft Windows Server 2022
- Microsoft 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 Server 2022 Azure Edition Core Hotpatch
- 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
- Microsoft Windows Server (Server Core installation) 2012 R2
- Microsoft Windows Server (Server Core installation) 2012
- Microsoft Windows Server for X64-based systems (Server Core installation) 2008 R2
- Microsoft Windows Server for X64-based systems (Server Core installation) 2008 R2 SP1
Remediation
Use Microsoft Automatic Update to apply the appropriate patch for your system, or the Microsoft Security Update Guide to search for available patches.