KLA12075 Multiple vulnerabilities in Microsoft Products (ESU)

Multiple vulnerabilities were found in Microsoft Products (Extended Support Update). Malicious users can exploit these vulnerabilities to cause denial of service, gain privileges, obtain sensitive information, execute arbitrary code, bypass security restrictions.

Below is a complete list of vulnerabilities:

1. A denial of service vulnerability in Windows Trust Verification API can be exploited remotely to cause denial of service.
2. An elevation of privilege vulnerability in Windows Event Tracing can be exploited remotely to gain privileges.
3. An information disclosure vulnerability in Windows Remote Procedure Call can be exploited remotely to obtain sensitive information.
4. An elevation of privilege vulnerability in Windows PKU2U can be exploited remotely to gain privileges.
5. A denial of service vulnerability in Windows TCP/IP can be exploited remotely to cause denial of service.
6. An elevation of privilege vulnerability in Windows Installer can be exploited remotely to gain privileges.
7. A remote code execution vulnerability in Windows TCP/IP can be exploited remotely to execute arbitrary code.
8. A remote code execution vulnerability in Windows DNS Server can be exploited remotely to execute arbitrary code.
9. A remote code execution vulnerability in Windows Address Book can be exploited remotely to execute arbitrary code.
10. A remote code execution vulnerability in Windows Fax Service can be exploited remotely to execute arbitrary code.
11. A remote code execution vulnerability in Windows Local Spooler can be exploited remotely to execute arbitrary code.
12. An information disclosure vulnerability in Microsoft Windows VMSwitch can be exploited remotely to obtain sensitive information.
13. A security feature bypass vulnerability in Microsoft Windows can be exploited remotely to bypass security restrictions.
14. An information disclosure vulnerability in Windows Backup Engine can be exploited remotely to obtain sensitive information.

Original advisories

CVE-2021-24080

CVE-2021-24103

CVE-2021-1734

CVE-2021-25195

CVE-2021-24086

CVE-2021-1727

CVE-2021-24102

CVE-2021-24094

CVE-2021-24078

CVE-2021-24083

CVE-2021-1722

CVE-2021-24074

CVE-2021-24088

CVE-2021-24077

CVE-2021-24076

CVE-2020-17162

CVE-2021-24079

Exploitation

Public exploits exist for this vulnerability.

Malware exists for this vulnerability. Usually such malware is classified as Exploit. More details.

Related products

Microsoft-Windows

Microsoft-Windows-Server

Microsoft-Windows-Server-2012

Microsoft-Windows-7

Microsoft-Windows-Server-2008

CVE list

CVE-2021-24080 high

CVE-2021-24103 critical

CVE-2021-1734 critical

CVE-2021-25195 critical

CVE-2021-24086 critical

CVE-2021-1727 critical

CVE-2021-24102 critical

CVE-2021-24094 critical

CVE-2021-24076 high

CVE-2021-24078 critical

CVE-2021-24083 critical

CVE-2021-24079 high

CVE-2021-1722 critical

CVE-2021-24074 critical

CVE-2021-24088 critical

CVE-2021-24077 critical

CVE-2020-17162 critical

KB list

4577048

4577066

4577071

4577038

4601347

4601363

4601357

4601348

4601384

4601349

4601360

4601366

Solution

Install necessary updates from the KB section, that are listed in your Windows Update (Windows Update usually can be accessed from the Control Panel)

Impacts

• ACE

Arbitrary code execution. Exploitation of vulnerabilities with this impact can lead to executing by abuser any code or commands at vulnerable machine or process.

• OSI

Obtain sensitive information. Exploitation of vulnerabilities with this impact can lead to capturing by abuser information, critical for user or system.

• DoS

Denial of service. Exploitation of vulnerabilities with this impact can lead to loss of system availability or critical functional fault.

• SB

Security bypass. Exploitation of vulnerabilities with this impact can lead to performing actions restricted by current security settings.

• PE

Privilege escalation. Exploitation of vulnerabilities with this impact can lead to performing by abuser actions, which are normally disallowed for current role.

Affected Products

• Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)Windows Server 2012Windows Server 2008 for x64-based Systems Service Pack 2Windows Server 2008 for 32-bit Systems Service Pack 2Windows Server 2008 R2 for x64-based Systems Service Pack 1Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)Windows 7 for x64-based Systems Service Pack 1Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)Windows Server 2012 R2 (Server Core installation)Windows Server 2012 R2Windows 7 for 32-bit Systems Service Pack 1Windows Server 2012 (Server Core installation)