CVE-2019-10218 : Security Advisory and Response

A vulnerability has been discovered in the samba client, affecting all versions before samba 4.11.2, 4.10.10, and 4.9.15. This flaw enables a rogue server to provide a path name containing separators to the client, potentially leading to unauthorized access to files and directories outside of the SMB network path names.

Understanding CVE-2019-10218

This CVE identifies a security vulnerability in the samba client software.

What is CVE-2019-10218?

The vulnerability allows an attacker to manipulate path names, granting access to files and directories beyond the intended scope.

The Impact of CVE-2019-10218

Exploiting this vulnerability could result in unauthorized access to sensitive data and potential manipulation of files by an attacker.

Technical Details of CVE-2019-10218

This section provides technical details of the CVE.

Vulnerability Description

The flaw in the samba client allows a malicious server to provide path names with separators, leading to unauthorized access.

Affected Systems and Versions

Vendor: Samba
Product: samba
Affected Versions: All samba versions before samba 4.11.2, 4.10.10, and 4.9.15

Exploitation Mechanism

An attacker can create files in locations beyond the current working directory using the client user's privileges.

Mitigation and Prevention

Steps to address and prevent the exploitation of CVE-2019-10218.

Immediate Steps to Take

Update samba to versions 4.11.2, 4.10.10, or 4.9.15 to mitigate the vulnerability.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update software and apply security patches.
Implement network segmentation to limit the impact of potential breaches.

Patching and Updates

Stay informed about security advisories and updates from Samba and other relevant vendors.