Unauthenticated domain takeover via netlogon (ZeroLogon) in Samba



Published: 2020-09-18 | Updated: 2022-11-22
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-1472
CWE-ID CWE-264
Exploitation vector Network
Public exploit Vulnerability #1 is being exploited in the wild.
Vulnerable software
Subscribe 		Samba
Server applications / Directory software, identity management

Vendor Samba

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU45628

Risk: High

CVSSv3.1:

CVE-ID: CVE-2020-1472

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: Yes

Description

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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Samba: 4.11.0 - 4.11.12, 4.12.0 - 4.12.6, 4.10.0 - 4.10.17, 4.9.0 - 4.9.18, 4.8.0 - 4.8.12, 4.7.0 - 4.7.12, 4.6.0 - 4.6.16, 4.5.0 - 4.5.16, 4.4.0 - 4.4.16, 4.3.0 - 4.3.13, 4.2.0 - 4.2.14, 4.1.0 - 4.1.23, 4.0.0 - 4.0.26

CPE2.3 External links

http://www.samba.org/samba/security/CVE-2020-1472.html

Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?



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