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kasperskyKaspersky LabKLA12043
HistoryJan 12, 2021 - 12:00 a.m.

KLA12043 PE vulnerability in Microsoft SQL Server

2021-01-1200:00:00
Kaspersky Lab
threats.kaspersky.com
83

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

8.9 High

AI Score

Confidence

High

6.5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:S/C:P/I:P/A:P

0.002 Low

EPSS

Percentile

51.5%

Detect date:

01/12/2021

Severity:

High

Description:

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

Exploitation:

Public exploits exist for this vulnerability.

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)

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)

Original advisories:

CVE-2021-1636

Impacts:

PE

Related products:

Microsoft SQL Server

CVE-IDS:

CVE-2021-16368.8Critical

KB list:

4583461
4583456
4583457
4583459
4583462
4583465
4583458
4583460
4583463

Microsoft official advisories:

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

8.9 High

AI Score

Confidence

High

6.5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:S/C:P/I:P/A:P

0.002 Low

EPSS

Percentile

51.5%