KLA12043 PE vulnerability in Microsoft SQL Server

An elevation of privilege vulnerability was found in Microsoft SQL Server. Malicious users can exploit this vulnerability to gain privileges.

Original advisories

CVE-2021-1636

Exploitation

Public exploits exist for this vulnerability.

Related products

Microsoft-SQL-Server

CVE list

CVE-2021-1636 critical

KB list

4583461

4583456

4583457

4583459

4583462

4583465

4583458

4583460

4583463

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

• 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

• Microsoft SQL Server 2014 Service Pack 3 for x64-based Systems (GDR)Microsoft SQL Server 2017 for x64-based Systems (CU 22)Microsoft SQL Server 2014 Service Pack 3 for 32-bit Systems (GDR)Microsoft SQL Server 2012 for 32-bit Systems Service Pack 4 (QFE)Microsoft SQL Server 2017 for x64-based Systems (GDR)Microsoft SQL Server 2019 for x64-based Systems (GDR)Microsoft SQL Server 2014 Service Pack 3 for 32-bit Systems (CU 4)Microsoft SQL Server 2012 for x64-based Systems Service Pack 4 (QFE)Microsoft SQL Server 2016 Service Pack 2 for x64-based Systems (CU 15)Microsoft SQL Server 2016 for x64-based Systems Service Pack 2 (GDR)Microsoft SQL Server 2019 for x64-based Systems (CU 8)Microsoft SQL Server 2014 Service Pack 3 for x64-based Systems (CU 4)