CVE-2018-8282 — Win32k Elevation of Privilege Vulnerability

Executive Summary

An elevation of privilege vulnerability exists in Windows when the Windows kernel-mode driver fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control of an affected system. The update addresses this vulnerability by correcting how the Windows kernel-mode driver handles objects in memory.

Overview

8.8

CVSS HIGH

Important

MS Severity

Not Exploited

MS Exploit Status

Exploitation Unlikely

MS Exploit Likelihood

Category Elevation of Privilege

Released Jul 10 2018

Last Updated Jul 10 2018

Publicly Disclosed No

CISA KEV Not Listed

Known Exploits None Known

CVSS Vector

ATTACK VECTOR

Local

ATTACK COMPLEXITY

Low

PRIVILEGES REQUIRED

Low

USER INTERACTION

None

SCOPE

Changed

CONFIDENTIALITY

High

INTEGRITY

High

AVAILABILITY

High

Temporal Score: 8.8

EPSS Score

No EPSS score available for this CVE.

View on FIRST.org

Affected Products

6 affected products

Product	KB Article	Severity	Impact	Restart Required
Windows 10 for 32-bit Systems 4338829 (Security Update) 4345455 (Alternate Cumulative) Important Denial of Service 4284860 Base: 8.8 Temporal: 8.8 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H Yes None Windows 10 for x64-based Systems 4338829 (Security Update) 4345455 (Alternate Cumulative) Important Denial of Service 4284860 Base: 8.8 Temporal: 8.8 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H Yes None Windows 10 Version 1607 for 32-bit Systems 4338814 (Security Update) 4345418 (Alternate Cumulative) Important Denial of Service 4284880 Base: 8.8 Temporal: 8.8 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H Yes None Windows 10 Version 1607 for x64-based Systems 4338814 (Security Update) 4345418 (Alternate Cumulative) Important Denial of Service 4284880 Base: 8.8 Temporal: 8.8 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H Yes None Windows 10 Version 1703 for 32-bit Systems 4338826 (Security Update) 4345419 (Alternate Cumulative) Important Denial of Service 4284874 Base: 8.8 Temporal: 8.8 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H Yes None Windows 10 Version 1703 for x64-based Systems 4338826 (Security Update) 4345419 (Alternate Cumulative) Important Denial of Service 4284874 Base: 8.8 Temporal: 8.8 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H Yes None Windows 10 Version 1709 for 32-bit Systems 4338825 (Security Update) 4345420 (Alternate Cumulative) Important Denial of Service 4284819 Base: 8.8 Temporal: 8.8 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H Yes None Windows 10 Version 1709 for x64-based Systems 4338825 (Security Update) 4345420 (Alternate Cumulative) Important Denial of Service 4284819 Base: 8.8 Temporal: 8.8 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H Yes None Windows 10 Version 1803 for 32-bit Systems 4338819 (Security Update) 4345421 (Alternate Cumulative) Important Denial of Service 4284835 Base: 8.8 Temporal: 8.8 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H Yes None Windows 10 Version 1803 for x64-based Systems 4338819 (Security Update) 4345421 (Alternate Cumulative) Important Denial of Service 4284835 Base: 8.8 Temporal: 8.8 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H Yes None Windows 7 for 32-bit Systems Service Pack 1 4338818 (Monthly Rollup) 4338823 (Security Only) 4338821 (Preview Rollup) 4345459 (Standalone) Important Elevation of Privilege 4284826 Base: 7.8 Temporal: 7.8 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Yes None Windows 7 for x64-based Systems Service Pack 1 4338818 (Monthly Rollup) 4338823 (Security Only) 4338821 (Preview Rollup) 4345459 (Standalone) Important Denial of Service 4284826 Base: 8.8 Temporal: 8.8 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H Yes None Windows 8.1 for 32-bit systems 4338815 (Monthly Rollup) 4338824 (Security Only) 4338831 (Preview Rollup) 4345424 (Standalone) Important Denial of Service 4284815 Base: 7.8 Temporal: 7.8 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Yes None Windows 8.1 for x64-based systems 4338815 (Monthly Rollup) 4338824 (Security Only) 4338831 (Preview Rollup) 4345424 (Standalone) Important Denial of Service 4284815 Base: 7.8 Temporal: 7.8 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Yes None Windows RT 8.1	`4338815 (Monthly Rollup)`	Important	Denial of Service	Yes
Windows Server 2008 for 32-bit Systems Service Pack 2	`4339854 (Security Update)`	Important	Elevation of Privilege	Yes
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)	`4339854 (Security Update)`	Important	Elevation of Privilege	Yes
Windows Server 2008 for Itanium-Based Systems Service Pack 2	`4339854 (Security Update)`	Important	Elevation of Privilege	Yes
Windows Server 2008 for x64-based Systems Service Pack 2	`4339854 (Security Update)`	Important	Elevation of Privilege	Yes
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)	`4339854 (Security Update)`	Important	Elevation of Privilege	Yes

Patches

2 patches

Article	Type	Restart
`4338815`	Monthly Rollup	Yes
`4339854`	Security Update	Yes

Known Exploits

No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.

Acknowledgments

hungtt28 of Viettel Cyber Security working with Trend Micro's Zero Day Initiative

References

MSRC Advisory MITRE NVD