CVE-2020-1472 Microsoft Netlogon Privilege Escalation

What is CVE-2020-1472?

CVE-2020-1472 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 17 Aug 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Which versions are affected by CVE-2020-1472?

It affects 15 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Microsoft Windows Server 1903, Microsoft Windows Server 1909, Microsoft Windows Server 2004 and 9 more.

How do I fix CVE-2020-1472?

Apply the vendor's patch. US federal agencies must fix it by 3 May 2022.

Is CVE-2020-1472 being exploited?

Yes. Attackers have exploited CVE-2020-1472 in the wild since at least 3 Nov 2021, including in ransomware campaigns.

Public exploit code: 1 Metasploit module, 1 Exploit-DB entry and 74 proofs of concept on GitHub.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALPINE-CVE-2020-1472, AZL-36991, AZL-7350, CLSA-2025-1766567499, DEBIAN-CVE-2020-1472, ECHO-ef87-c97b-a239 and 14 more.