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
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Microsoft Windows Server version 2004
10.0.0 to < publicationaffected
Microsoft Windows Server 2019
10.0.0 to < publicationaffected
Microsoft Windows Server 2019 (Server Core installation)
10.0.0 to < publicationaffected
Microsoft Windows Server, version 1909 (Server Core installation)
10.0.0 to < publicationaffected
Microsoft Windows Server, version 1903 (Server Core installation)
10.0.0 to < publicationaffected
Microsoft Windows Server 2016
10.0.0 to < publicationaffected
Microsoft Windows Server 2016 (Server Core installation)
10.0.0 to < publicationaffected
Microsoft Windows Server 2008 R2 Service Pack 1
6.1.0 to < publicationaffected
Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation)
6.0.0 to < publicationaffected
Microsoft Windows Server 2012
6.2.0 to < publicationaffected
Microsoft Windows Server 2012 (Server Core installation)
6.2.0 to < publicationaffected
Microsoft Windows Server 2012 R2
6.3.0 to < publicationaffected
Microsoft Windows Server 2012 R2 (Server Core installation)
6.3.0 to < publicationaffected
Microsoft Windows Server version 20H2
10.0.0 to < publicationaffected
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1472 ↗
- https://www.kb.cert.org/vuls/id/490028 ↗
- http://www.openwall.com/lists/oss-security/2020/09/17/2 ↗
- https://usn.ubuntu.com/4510-1/ ↗
- https://usn.ubuntu.com/4510-2/ ↗
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H4OTFBL6YDVFH2TBJFJIE4FMHPJEEJK3/ ↗
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00080.html ↗
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00086.html ↗
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TAPQQZZAT4TG3XVRTAFV2Y3S7OAHFBUP/ ↗
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ST6X3A2XXYMGD4INR26DQ4FP4QSM753B/ ↗
- https://usn.ubuntu.com/4559-1/ ↗
- https://lists.debian.org/debian-lts-announce/2020/11/msg00041.html ↗
- https://security.gentoo.org/glsa/202012-24 ↗
- https://www.oracle.com/security-alerts/cpuApr2021.html ↗
- http://packetstormsecurity.com/files/159190/Zerologon-Proof-Of-Concept.html ↗
- https://www.synology.com/security/advisory/Synology_SA_20_21 ↗
- http://packetstormsecurity.com/files/160127/Zerologon-Netlogon-Privilege-Escalation.html ↗
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1472 ↗