CVE-2020-1472

Netlogon Elevation of Privilege Vulnerability

Published Aug 17, 2020 CVSS 3.1 · 5.5 Medium EPSS 99.4% KEV · Listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-2463-1 samba security update
Ubuntu USN Ubuntu USN USN-4510-1 Samba vulnerability
Ubuntu USN Ubuntu USN USN-4510-2 Samba vulnerability
Ubuntu USN Ubuntu USN USN-4559-1 Samba update
References
Link Providers
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00080.html cve-icon cve-icon
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00086.html cve-icon cve-icon
http://packetstormsecurity.com/files/159190/Zerologon-Proof-Of-Concept.html cve-icon cve-icon
http://packetstormsecurity.com/files/160127/Zerologon-Netlogon-Privilege-Escalation.html cve-icon cve-icon
http://www.openwall.com/lists/oss-security/2020/09/17/2 cve-icon cve-icon
https://kb.cert.org/vuls/id/490028#Samba cve-icon
https://lists.debian.org/debian-lts-announce/2020/11/msg00041.html cve-icon cve-icon
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H4OTFBL6YDVFH2TBJFJIE4FMHPJEEJK3/ cve-icon cve-icon
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ST6X3A2XXYMGD4INR26DQ4FP4QSM753B/ cve-icon cve-icon
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TAPQQZZAT4TG3XVRTAFV2Y3S7OAHFBUP/ cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2020-1472 cve-icon
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1472 cve-icon cve-icon cve-icon
https://security.gentoo.org/glsa/202012-24 cve-icon cve-icon
https://usn.ubuntu.com/4510-1/ cve-icon cve-icon
https://usn.ubuntu.com/4510-2/ cve-icon cve-icon
https://usn.ubuntu.com/4559-1/ cve-icon cve-icon
https://www.cisa.gov/known-exploited-vulnerabilities-catalog cve-icon
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1472 cve-icon cve-icon
https://www.cve.org/CVERecord?id=CVE-2020-1472 cve-icon
https://www.kb.cert.org/vuls/id/490028 cve-icon cve-icon
https://www.oracle.com/security-alerts/cpuApr2021.html cve-icon cve-icon
https://www.samba.org/samba/security/CVE-2020-1472.html cve-icon
https://www.synology.com/security/advisory/Synology_SA_20_21 cve-icon cve-icon
History
Type Values Removed Values Added
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. 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.
Type Values Removed Values Added
Metrics kev

{'dateAdded': '2021-11-03'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}