CVE-2018-8549 : A security feature bypass exists when Windows incorrectly validates kernel drive

A security feature bypass exists when Windows incorrectly validates kernel driver signatures, aka "Windows Security Feature Bypass Vulnerability." This affects Windows Server 2012 R2, Windows RT 8.1, Windows Server 2012, Windows Server 2019, Windows Server 2016, Windows 8.1, Windows 10, Windows 10 Servers.

Published 2018-11-14 01:29:01

Updated 2019-10-03 00:03:26

Source Microsoft Corporation

View at NVD, CVE.org

Products affected by CVE-2018-8549

Microsoft » Windows Server 2012 » Version: N/A
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
Matching versions
Microsoft » Windows Server 2012 » Version: R2
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
Matching versions
Microsoft » Windows 8.1 » Version: N/A
cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:*
Matching versions
Microsoft » Windows Rt 8.1 » Version: N/A
cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*
Matching versions
Microsoft » Windows 10 » Version: N/A
cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:*
Matching versions
Microsoft » Windows 10 » Version: 1607
cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:*
Matching versions
Microsoft » Windows 10 » Version: 1703
cpe:2.3:o:microsoft:windows_10:1703:*:*:*:*:*:*:*
Matching versions
Microsoft » Windows 10 » Version: 1709
cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:*
Matching versions
Microsoft » Windows 10 » Version: 1803
cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:*:*
Matching versions
Microsoft » Windows 10 » Version: 1809
cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:*
Matching versions
Microsoft » Windows Server 2016 » Version: N/A
cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*
Matching versions
Microsoft » Windows Server 2016 » Version: 1709
cpe:2.3:o:microsoft:windows_server_2016:1709:*:*:*:*:*:*:*
Matching versions
Microsoft » Windows Server 2016 » Version: 1803
cpe:2.3:o:microsoft:windows_server_2016:1803:*:*:*:*:*:*:*
Matching versions
Microsoft » Windows Server 2019 » Version: N/A
cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2018-8549

EPSS FAQ

1.92%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 88 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2018-8549

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
2.1	LOW	AV:L/AC:L/Au:N/C:N/I:P/A:N	3.9	2.9	NIST
Access Vector: Local Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: Partial Availability Impact: None
5.5	MEDIUM	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N	1.8	3.6	NIST
Attack Vector: Local Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: None Integrity: High Availability: None

References for CVE-2018-8549

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8549

CVE-2018-8549 - Security Update Guide - Microsoft - Windows Security Feature Bypass Vulnerability
Patch;Vendor Advisory
http://www.securitytracker.com/id/1042138

Windows Kernel Driver Signature Validation Flaw Lets Local Users Modify Data on the Target System - SecurityTracker
Third Party Advisory;VDB Entry
http://www.securityfocus.com/bid/105803

Microsoft Windows Security Feature CVE-2018-8549 Local Security Bypass Vulnerability
Third Party Advisory;VDB Entry

Jump to

Vulnerability Details : CVE-2018-8549

Products affected by CVE-2018-8549

Exploit prediction scoring system (EPSS) score for CVE-2018-8549

CVSS scores for CVE-2018-8549

References for CVE-2018-8549