Kerberos Authentication Vulnerability in Samba Active Directory Domain Controller
CVE-2020-25721

8.8HIGH

Key Information:

Vendor

Samba

Status
Samba
Vendor
CVE Published:
16 March 2022

What is CVE-2020-25721?

Samba's Active Directory Domain Controller has a vulnerability that affects how Kerberos acceptors access stable Active Directory identifiers. This issue allows Linux applications to obtain reliable Security Identifiers (SIDs) and corresponding samAccountNames from issued tickets, which may lead to unforeseen security implications for environments leveraging Kerberos authentication with Samba.

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Affected Version(s)

samba Affected - All versions since Samba 4.0.0, Fixed-In - v4.15.2, v4.14.10 and v4.13.14

References

https://www.samba.org/samba/security/CVE-2020-25721.html
https://bugzilla.samba.org/show_bug.cgi?id=14725
https://bugzilla.redhat.com/show_bug.cgi?id=2021728

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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