Microsoft Windows Server, version 1909 (Server Core installation) vulnerabilities
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Published CVEs affecting Microsoft Windows Server, version 1909 (Server Core installation): 6 record(s), with affected versions and fixes.
CVE-2021-28310
High · 7.8
KEV High · 61 Public exploit CWE-787 Apr 13, 2021
Microsoft Win32k Privilege Escalation Vulnerability
Win32k Elevation of Privilege Vulnerability
CVE-2021-1732
High · 7.8
KEV Urgent · 94 Public exploit Ransomware CWE-787 Feb 25, 2021
Microsoft Win32k Privilege Escalation Vulnerability
Windows Win32k Elevation of Privilege Vulnerability
CVE-2020-17087
High · 7.8
KEV High · 61 Public exploit CWE-131 Nov 11, 2020
Microsoft Windows Kernel Privilege Escalation Vulnerability
Windows Kernel Local Elevation of Privilege Vulnerability
CVE-2020-1472
Medium · 5.5
KEV Urgent · 96 Public exploit Ransomware Aug 17, 2020
Microsoft Netlogon Privilege Escalation Vulnerability
An elevation of privilege vulnerability exists when an attacker establishes a vulnerable Netlogon secure channel connection to a domain controller, using the Netlogon Remote Protocol (MS-NRPC). An attacker who successfully exploited the vulnerability could run a specially crafted application on a device on the network.
To exploit the vulnerability, an unauthenticated attacker would be required to use MS-NRPC to connect to a domain controller to obtain domain administrator access.
Microsoft is addressing the vulnerability in a phased two-part rollout. These updates address the vulnerability by modifying how Netlogon handles the usage of Netlogon secure channels.
For guidelines on how to manage the changes required for this vulnerability and more information on the phased rollout, see How to manage the changes in Netlogon secure channel connections associated with CVE-2020-1472 (updated September 28, 2020).
When the second phase of Windows updates become available in Q1 2021, customers will be notified via a revision to this security vulnerability. If you wish to be notified when these updates are released, we recommend that you register for the security notifications mailer to be alerted of content changes to this advisory. See Microsoft Technical Security Notifications.
CVE-2020-1464
High · 7.8
KEV High · 56 CWE-347 Aug 17, 2020
Microsoft Windows Spoofing Vulnerability
A spoofing vulnerability exists when Windows incorrectly validates file signatures. An attacker who successfully exploited this vulnerability could bypass security features and load improperly signed files.
In an attack scenario, an attacker could bypass security features intended to prevent improperly signed files from being loaded.
The update addresses the vulnerability by correcting how Windows validates file signatures.
CVE-2020-1054
High · 7.0
KEV High · 68 Public exploit CWE-787 May 21, 2020
Microsoft Win32k Privilege Escalation Vulnerability
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.