CVE-2019-3937 : Vulnerability Insights and Analysis

Crestron AM-100 with firmware 1.6.0.2 and AM-101 with firmware 2.7.0.2 have a security vulnerability that exposes sensitive information in an unencrypted format.

Understanding CVE-2019-3937

The vulnerability in Crestron AirMedia devices allows local threat actors to access stored sensitive data.

What is CVE-2019-3937?

The Crestron AM-100 and AM-101 devices store usernames, passwords, slideshow passcodes, and other configuration options in cleartext in the file /tmp/scfgdndf, making this information easily accessible to attackers with local access.

The Impact of CVE-2019-3937

This vulnerability poses a significant risk as it allows unauthorized access to sensitive information, compromising the security and privacy of users and potentially leading to unauthorized system control.

Technical Details of CVE-2019-3937

The technical aspects of the vulnerability are as follows:

Vulnerability Description

The flaw involves the storage of sensitive data in an unencrypted format, specifically in the file /tmp/scfgdndf on the affected devices.

Affected Systems and Versions

Product: Crestron AirMedia
Vendor: Crestron
Versions: AM-100 firmware 1.6.0.2 and AM-101 firmware 2.7.0.2

Exploitation Mechanism

The vulnerability can be exploited by threat actors with local access to the device, enabling them to retrieve the stored sensitive information.

Mitigation and Prevention

Protecting against CVE-2019-3937 requires immediate action and long-term security practices:

Immediate Steps to Take

Disable local access to the affected devices if not required.
Monitor and restrict physical access to the devices to prevent unauthorized retrieval of sensitive data.
Regularly review and update access controls and permissions.

Long-Term Security Practices

Implement encryption mechanisms for sensitive data storage.
Conduct regular security audits and assessments to identify and address vulnerabilities.
Educate users on secure data handling practices to minimize risks.

Patching and Updates

Apply firmware updates provided by Crestron to address the vulnerability and enhance device security.