MS-RPC: Microsoft Netlogon CVE-2020-1472 Elevation of Privilege

This signature detects attempts to exploit a known vulnerability against Microsoft Netlogon Remote Protocol. A successful attack can lead to elevation of privilege and arbitrary code execution.

Extended 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

Microsoft windows_server_2004

References

CVE: CVE-2020-1472

Short Name

MS-RPC:NTLGON-CVE-2020-1472-EOP

Severity

Critical

Recommended

True

Recommended Action

Drop

MS-RPC: Microsoft Netlogon CVE-2020-1472 Elevation of Privilege

Extended Description

Affected Products

References

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