#VU58096 Permissions, Privileges, and Access Controls in Samba


Published: 2021-11-10

Vulnerability identifier: #VU58096

Vulnerability risk: Medium

CVSSv3.1:

CVE-ID: CVE-2020-25718

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Samba
Server applications / Directory software, identity management

Vendor: Samba

Description

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

The vulnerability exists due to Samba AD DC does not correctly sandbox Kerberos tickets issued by an RODC, which leads to security restrictions bypass and privilege escalation.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Samba: 4.13.0 - 4.13.13, 4.15.0 - 4.15.1, 4.14.0 - 4.14.9, 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


CPE

External links
http://www.samba.org/samba/security/CVE-2020-25718.html


Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?


Latest bulletins with this vulnerability