Services impersonation vulnerability in Samba



Published: 2022-01-31
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-0336
CWE-ID CWE-345
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Samba
Server applications / Directory software, identity management

Vendor Samba

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Insufficient verification of data authenticity

EUVDB-ID: #VU60185

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2022-0336

CWE-ID: CWE-345 - Insufficient Verification of Data Authenticity

Exploit availability: No

Description

The vulnerability allows a local user to impersonate arbitrary services.

The vulnerability exists due to Samba AD DC relies only on SPN (service principals name) to identify services on the network. An attacker with ability to modify SPNs can bypass implemented protection and cause a denial of service condition by adding an SPN that matches an existing service or impersonate services on the network.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Samba: 4.15.0 - 4.15.3, 4.14.0 - 4.14.11, 4.13.0 - 4.13.16, 4.12.0 - 4.12.15, 4.11.0 - 4.11.17, 4.10.0 - 4.10.18, 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-2022-0336.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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