CVE-2020-1109: Windows Update Stack Elevation of Privilege Vulnerability
This Microsoft advisory covers CVE-2020-1109 in Windows Server 2019 (Server Core installation), Windows Server, version 1803 (Server Core Installation) and Windows Server, version 1903 (Server Core installation).
- CVE-2020-1109
Key facts
- Vendor rating
- High, CVSS 7.8
- CISA KEV
- Not listed (catalogue checked )
- Affected
- Windows 10 Version 1709 10.0.0 before publication; Windows 10 Version 1709 for 32-bit Systems 10.0.0 before publication; Windows 10 Version 1803 10.0.0 before publication and 9 more below
- Fixed in
- publication
- Source published
- Source revised
- Listed by VulniPulse
Compiled by VulniPulse from the linked sources. How records are collected and checked.
Affected products & platforms
Description
An elevation of privilege vulnerability exists when the Windows Update Stack 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 to take control of an affected system. The update addresses the vulnerability by correcting how the Windows Update Stack handles objects in memory.
Affected products named by the advisory: Windows Server 2019; Windows Server 2019 (Server Core installation); Windows Server, version 1803 (Server Core Installation); Windows Server, version 1903 (Server Core installation); and 1 more.
Affected products named by the advisory: Windows Server, version 1909 (Server Core installation).
Text from the source record.
- Windows 10 Version 1709 10.0.0 before publication
- Windows 10 Version 1709 for 32-bit Systems 10.0.0 before publication
- Windows 10 Version 1803 10.0.0 before publication
- Windows 10 Version 1809 10.0.17763.0 before publication
- Windows 10 Version 1809 10.0.0 before publication
- Windows 10 Version 1903 for 32-bit Systems 10.0.0 before publication
- Windows 10 Version 1903 for ARM64-based Systems 10.0.0 before publication
- Windows 10 Version 1903 for x64-based Systems 10.0.0 before publication
- Windows 10 Version 1909 10.0.0 before publication
- Windows Server 2019 10.0.17763.0 before publication
- Windows Server 2019 (Server Core installation) 10.0.17763.0 before publication
- Windows Server, version 1803 (Server Core Installation) 10.0.0 before publication
Official advisory · high-confidence parse· fetched ·verify at source
How to fix CVE-2020-1109
Upgrade to a fixed release named by Microsoft:
- publication
Vendor guidance
- An elevation of privilege vulnerability exists when the Windows Update Stack fails to properly handle objects in memory.
- An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.
- The update addresses the vulnerability by correcting how the Windows Update Stack handles objects in memory.
End-of-life dates for Windows Server
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