CVE-2019-13402 : Vulnerability Insights and Analysis

This CVE involves an incomplete factory reset process on Dynacolor FCM-MB40 v1.2.0.0 devices, potentially leaving a backdoor active. The affected files are /usr/sbin/default.sh and /usr/apache/htdocs/cgi-bin/admin/hardfactorydefault.cgi.

Understanding CVE-2019-13402

This CVE highlights a security issue in the factory reset mechanism of Dynacolor FCM-MB40 v1.2.0.0 devices.

What is CVE-2019-13402?

The incomplete factory reset process on the mentioned devices allows a backdoor to persist by not resetting system accounts or services.

The Impact of CVE-2019-13402

The vulnerability could be exploited by malicious actors to maintain unauthorized access to the affected devices.

Technical Details of CVE-2019-13402

This section provides more technical insights into the CVE.

Vulnerability Description

The incomplete factory reset process in /usr/sbin/default.sh and /usr/apache/htdocs/cgi-bin/admin/hardfactorydefault.cgi enables a backdoor to remain active.

Affected Systems and Versions

Device: Dynacolor FCM-MB40 v1.2.0.0
Files: /usr/sbin/default.sh, /usr/apache/htdocs/cgi-bin/admin/hardfactorydefault.cgi

Exploitation Mechanism

The vulnerability allows threat actors to maintain unauthorized access due to the incomplete reset process.

Mitigation and Prevention

Protecting systems from CVE-2019-13402 is crucial for maintaining security.

Immediate Steps to Take

Monitor for any unauthorized access or changes on the affected devices.
Consider restricting network access to vulnerable devices.

Long-Term Security Practices

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

Patching and Updates

Check for patches or updates from the device manufacturer to address this vulnerability.