Permissions, Privileges, and Access Controls in Windows Server - CVE-2020-1472

 

Permissions, Privileges, and Access Controls in Windows Server - CVE-2020-1472

Published: August 12, 2020 / Updated: January 7, 2024


Vulnerability identifier: #VU45628
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-1472
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability: The vulnerability is being exploited in the wild

Vulnerability details

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to application does not properly impose security restrictions in Netlogon. A remote non-authenticated attacker can use MS-NRPC to connect to a domain controller to obtain domain administrator access. This vulnerability was dubbed ZeroLogon.


Affected software

Windows Server
Gentoo Linux
Amazon Linux AMI
Arch Linux
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux Resilient Storage for x86_64
CentOS
Red Hat Enterprise Linux for ARM 64
Red Hat CodeReady Linux Builder for x86_64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for ARM 64
Red Hat Enterprise Linux for x86_64
Ubuntu
Opensuse
openEuler
Fedora
openchange (Red Hat package)
samba (Alpine package)
samba (Red Hat package)
samba (Ubuntu package)
samba-dc
samba-vfs-glusterfs
samba-dc-bind-dlz
samba-dc-provision
samba-debuginfo
samba-debugsource
samba-devel
samba-help
samba-krb5-printing
samba-libs
samba-test
samba-winbind
samba-winbind-clients
samba-winbind-krb5-locator
samba-winbind-modules
samba-common-tools
samba-common
samba-client
python3-samba-test
python3-samba-dc
python3-samba
libwbclient-devel
libwbclient
libsmbclient-devel
libsmbclient
ctdb-tests
ctdb
samba-pidl
samba
Samba
Huawei FusionAccess
Oracle ZFS Storage Appliance Kit
RoboHelp
Juniper Junos Space

How to mitigate CVE-2020-1472

Install updates from vendor's website.

openchange (Red Hat package) - update to 2.3-27.el8
Samba - addressed in versions 4.10.18, 4.11.13, 4.12.7
samba (Alpine package) - update to 4.12.7-r0
samba (Red Hat package) - addressed in versions 4.10.16-9.el7_9, 4.11.6-112.el7rhgs, 4.13.3-3.el8, 4.13.7-101.el8rhgs
Huawei FusionAccess - update to 6.5.1.SPC004
samba (Ubuntu package) - addressed in versions 2:4.3.11+dfsg-0ubuntu0.14.04.20+esm9, 2:4.3.11+dfsg-0ubuntu0.16.04.30, 2:4.3.11+dfsg-0ubuntu0.16.04.31, 2:4.7.6+dfsg~ubuntu-0ubuntu2.19, 2:4.7.6+dfsg~ubuntu-0ubuntu2.20, 2:4.11.6+dfsg-0ubuntu1.5
samba-dc - update to 4.11.12-2
samba-vfs-glusterfs - update to 4.11.12-2
samba-dc-bind-dlz - update to 4.11.12-2
samba-dc-provision - update to 4.11.12-2
samba-debuginfo - update to 4.11.12-2
samba-debugsource - update to 4.11.12-2
samba-devel - update to 4.11.12-2
samba-help - update to 4.11.12-2
samba-krb5-printing - update to 4.11.12-2
samba-libs - update to 4.11.12-2
samba-test - update to 4.11.12-2
samba-winbind - update to 4.11.12-2
samba-winbind-clients - update to 4.11.12-2
samba-winbind-krb5-locator - update to 4.11.12-2
samba-winbind-modules - update to 4.11.12-2
samba-common-tools - update to 4.11.12-2
samba-common - update to 4.11.12-2
samba-client - update to 4.11.12-2
python3-samba-test - update to 4.11.12-2
python3-samba-dc - update to 4.11.12-2
python3-samba - update to 4.11.12-2
libwbclient-devel - update to 4.11.12-2
libwbclient - update to 4.11.12-2
libsmbclient-devel - update to 4.11.12-2
libsmbclient - update to 4.11.12-2
ctdb-tests - update to 4.11.12-2
ctdb - update to 4.11.12-2
samba-pidl - update to 4.11.12-2
samba - update to 4.11.12-2
samba - addressed in versions 4.11.13-0.fc31, 4.12.7-0.fc32, 4.13.0-0.10.rc6.fc33, 4.13.0-0.10.rc6.fc34, 4.13.0-11.fc33
Juniper Junos Space - update to 21.2R1

Links to Public Exploits and PoC-codes

External References

Related Security Bulletins