CVE-2019-3870 : What You Need to Know

A vulnerability has been discovered in Samba versions 4.9.6 and 4.10.2, affecting the Samba Project. The vulnerability allows unauthorized access to sensitive files during the creation of a new Samba AD DC.

Understanding CVE-2019-3870

This CVE pertains to a security issue in Samba versions 4.9.6 and 4.10.2, impacting the integrity and availability of the system.

What is CVE-2019-3870?

CVE-2019-3870 is a vulnerability in Samba that allows files to be created with insecure permissions, potentially leading to unauthorized access.

The Impact of CVE-2019-3870

The vulnerability has a CVSS base score of 6.1, indicating a medium severity issue. It can result in high availability impact, low integrity impact, and requires low privileges for exploitation.

Technical Details of CVE-2019-3870

This section covers the technical aspects of the CVE.

Vulnerability Description

The vulnerability in Samba versions 4.9.6 and 4.10.2 allows files to be created with insecure permissions, making them accessible to unauthorized users.

Affected Systems and Versions

Affected Versions: 4.9.6, 4.10.2
Vendor: The Samba Project

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Local
Privileges Required: Low
User Interaction: None
Scope: Unchanged

Mitigation and Prevention

Protect your systems from CVE-2019-3870 with the following steps:

Immediate Steps to Take

Update Samba to a patched version that addresses the vulnerability.
Restrict access to sensitive directories and files.

Long-Term Security Practices

Regularly monitor and audit file permissions on your system.
Implement the principle of least privilege to limit access rights.

Patching and Updates

Stay informed about security updates from The Samba Project.
Apply patches promptly to secure your systems.