CVE-2018-11421 Explained : Impact and Mitigation

The Moxa OnCell G3100-HSPA Series, specifically version 1.6 Build 17100315 and earlier, is affected by a vulnerability that exposes sensitive information due to a lack of security measures in its monitoring protocol.

Understanding CVE-2018-11421

This CVE identifies a security issue in the Moxa OnCell G3100-HSPA Series that could lead to unauthorized access and exposure of critical data.

What is CVE-2018-11421?

The affected versions of the Moxa OnCell G3100-HSPA Series use a monitoring protocol without encryption, allowing for interception and alteration of transmitted data. This vulnerability also enables remote unauthorized access, potentially compromising sensitive information, including administrator passwords.

The Impact of CVE-2018-11421

The lack of security controls in the monitoring protocol can result in severe consequences, such as unauthorized access to sensitive data and potential leakage of critical information.

Technical Details of CVE-2018-11421

The technical aspects of the vulnerability provide insight into its nature and potential risks.

Vulnerability Description

The proprietary monitoring protocol used in the affected Moxa OnCell G3100-HSPA Series versions lacks confidentiality, integrity, and authenticity security controls. This deficiency allows for the interception and modification of transmitted data, posing a significant security risk.

Affected Systems and Versions

Moxa OnCell G3100-HSPA Series version 1.6 Build 17100315 and earlier

Exploitation Mechanism

Lack of encryption in the monitoring protocol allows for interception and alteration of transmitted data
Vulnerability to remote unauthorized access, potentially leading to the disclosure of sensitive information
Possibility of retrieving additional details, such as HTTP request content and previous passwords, due to memory leaks

Mitigation and Prevention

Addressing CVE-2018-11421 requires immediate actions and long-term security practices to enhance system protection.

Immediate Steps to Take

Update to the latest firmware version provided by the vendor
Implement network segmentation to restrict access to vulnerable devices
Monitor network traffic for any suspicious activities

Long-Term Security Practices

Conduct regular security assessments and audits to identify vulnerabilities
Train employees on cybersecurity best practices to prevent unauthorized access
Implement encryption protocols to secure data transmission

Patching and Updates

Regularly check for security updates and patches from the vendor
Apply patches promptly to mitigate the vulnerability and enhance system security