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kasperskyKaspersky LabKLA12112
HistoryMar 09, 2021 - 12:00 a.m.

KLA12112 Multiple vulnerabilities in Microsoft Products (ESU)

2021-03-0900:00:00
Kaspersky Lab
threats.kaspersky.com
20

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

8.8 High

AI Score

Confidence

High

10 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

0.065 Low

EPSS

Percentile

93.6%

Detect date:

03/09/2021

Severity:

Critical

Description:

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

Exploitation:

Public exploits exist for this vulnerability.

Affected products:

Windows 7 for 32-bit Systems Service Pack 1
Windows Server 2008 for x64-based Systems Service Pack 2
Windows 7 for x64-based Systems Service Pack 1
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
Internet Explorer 9
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)

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-2021-26411
CVE-2021-26899
CVE-2021-26875
CVE-2021-27063
CVE-2021-26895
CVE-2021-24107
CVE-2021-26878
CVE-2021-27077
CVE-2021-26894
CVE-2021-26898
CVE-2021-26893
CVE-2021-26896
CVE-2021-26869
CVE-2021-26877
CVE-2021-1640
CVE-2021-26897
CVE-2021-26872
CVE-2021-26861
CVE-2021-26901
CVE-2021-26881
CVE-2021-26882
CVE-2021-26862
CVE-2021-26873
CVE-2021-26887

Impacts:

ACE

Related products:

Microsoft Internet Explorer

CVE-IDS:

CVE-2021-264118.8Critical
CVE-2021-268997.8Critical
CVE-2021-268757.8Critical
CVE-2021-270637.5Critical
CVE-2021-268959.8Critical
CVE-2021-241075.5High
CVE-2021-268877.8Critical
CVE-2021-268787.8Critical
CVE-2021-270777.8Critical
CVE-2021-268949.8Critical
CVE-2021-268987.8Critical
CVE-2021-268939.8Critical
CVE-2021-268967.5Critical
CVE-2021-268695.5High
CVE-2021-268779.8Critical
CVE-2021-16407.8Critical
CVE-2021-268979.8Critical
CVE-2021-268727.8Critical
CVE-2021-268617.8Critical
CVE-2021-269017.8Critical
CVE-2021-268817.5Critical
CVE-2021-268827.8Critical
CVE-2021-268627.0High
CVE-2021-268737.0High

KB list:

5000800
5000841
5000851
5000856
5000844

Microsoft official advisories:

References

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

8.8 High

AI Score

Confidence

High

10 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

0.065 Low

EPSS

Percentile

93.6%