CVE-2019-3934 : Exploit Details and Defense Strategies

Crestron AM-100 with firmware 1.6.0.2 and AM-101 with firmware 2.7.0.2 allows anyone to bypass the presentation code by sending a crafted HTTP POST request to login.cgi. A remote, unauthenticated attacker can exploit this vulnerability to download the current slide image without knowing the access code.

Understanding CVE-2019-3934

The presence of specific firmware versions in Crestron AirMedia devices introduces a security flaw that enables unauthorized access to slide images.

What is CVE-2019-3934?

CVE-2019-3934 is a vulnerability in Crestron AirMedia devices that allows attackers to bypass presentation code and download slide images without authentication.

The Impact of CVE-2019-3934

The vulnerability poses a significant security risk as it enables unauthorized individuals to access sensitive presentation content without proper authentication.

Technical Details of CVE-2019-3934

Vulnerability Description

The flaw in firmware versions 1.6.0.2 for AM-100 and 2.7.0.2 for AM-101 allows attackers to circumvent the presentation code by sending a specific HTTP POST request to login.cgi.

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

Attackers can exploit the vulnerability by sending a crafted HTTP POST request to login.cgi
No remote authentication is required for exploitation

Mitigation and Prevention

Immediate Steps to Take

Update the firmware to the latest version that addresses the vulnerability
Implement network segmentation to restrict access to vulnerable devices

Long-Term Security Practices

Regularly monitor and audit network traffic for any suspicious activity
Educate users on secure practices to prevent unauthorized access

Patching and Updates

Apply patches and updates provided by Crestron to fix the security flaw