CVE-2018-5399 : Exploit Details and Defense Strategies

The firmware of the Auto-Maskin DCU 210E device contains a hidden Dropbear SSH server with hard-coded credentials, allowing unauthorized root access.

Understanding CVE-2018-5399

This CVE involves a critical vulnerability in Auto-Maskin DCU-210E and RP-210E devices, potentially leading to unauthorized system access.

What is CVE-2018-5399?

The Auto-Maskin DCU 210E firmware includes an undocumented Dropbear SSH server with a predefined username and password combination, enabling attackers to gain root access to the system.

The Impact of CVE-2018-5399

The vulnerability poses a critical threat as it allows unauthorized users to modify system binaries and configuration files, compromising system integrity.

Technical Details of CVE-2018-5399

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The firmware of Auto-Maskin DCU 210E contains a hidden Dropbear SSH server with hard-coded credentials, facilitating unauthorized access.

Affected Systems and Versions

Products: DCU-210E, RP-210E
Vendor: Auto-Maskin
Platforms: ARMv7
Versions Affected: Prior to 3.7

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: None
User Interaction: None
Scope: Unchanged
CVSS Base Score: 9.4 (Critical)

Mitigation and Prevention

Protect your systems from CVE-2018-5399 by following these mitigation strategies.

Immediate Steps to Take

Log in via SSH and remove the server or change the hard-coded password to SP 800-63B standards.

Long-Term Security Practices

Regularly update firmware and software to patch known vulnerabilities.
Implement strong password policies and multi-factor authentication.

Patching and Updates

Stay informed about security updates and apply patches promptly to safeguard your systems.