5.5 Medium Exploited · ransomware

CVE-2020-1472 Microsoft Netlogon Privilege Escalation Vulnerability

Active exploitation observed

· CISA KEV catalogue

Required action Apply updates per vendor instructions.

Ransomware campaigns Known to be used

Weakness CWE-330

Description

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.

Affected products and versions

Product	Affected versions	Fixed in
Windows Server version 2004 10.0	10.0.0 → latest	No fix stated
Windows Server 2019 10.0	10.0.0 → latest	No fix stated
Windows Server 2019 (Server Core installation) 10.0	10.0.0 → latest	No fix stated
Windows Server, version 1909 (Server Core installation) 10.0	10.0.0 → latest	No fix stated
Windows Server, version 1903 (Server Core installation) 10.0	10.0.0 → latest	No fix stated
Windows Server 2016 10.0	10.0.0 → latest	No fix stated
Windows Server 2016 (Server Core installation) 10.0	10.0.0 → latest	No fix stated
Windows Server 2008 R2 Service Pack 1 6.1	6.1.0 → latest	No fix stated
Windows Server 2008 R2 Service Pack 1 (Server Core installation) 6.0	6.0.0 → latest	No fix stated

Show the 5 other branches

Product	Affected versions	Fixed in
Windows Server 2012 6.2	6.2.0 → latest	No fix stated
Windows Server 2012 (Server Core installation) 6.2	6.2.0 → latest	No fix stated
Windows Server 2012 R2 6.3	6.3.0 → latest	No fix stated
Windows Server 2012 R2 (Server Core installation) 6.3	6.3.0 → latest	No fix stated
Windows Server version 20H2 10.0	10.0.0 → latest	No fix stated