CVE-2020-27542 : Vulnerability Insights and Analysis

Rostelecom CS-C2SHW 5.0.082.1 is affected by a Bash command injection vulnerability through QR code configuration, allowing unauthorized execution of commands.

Understanding CVE-2020-27542

What is CVE-2020-27542?

The vulnerability in Rostelecom CS-C2SHW 5.0.082.1 allows for Bash command injection via QR code configuration, potentially leading to unauthorized command execution.

The Impact of CVE-2020-27542

The vulnerability enables attackers to inject malicious commands into the camera's configuration file, posing a risk of unauthorized access and control over the device.

Technical Details of CVE-2020-27542

Vulnerability Description

Bash command injection vulnerability in Rostelecom CS-C2SHW 5.0.082.1 through QR code configuration
Static IP settings from QR code copied to /config/ip-static file, leading to unescaped bash command insertion

Affected Systems and Versions

Product: Rostelecom CS-C2SHW 5.0.082.1
Vendor: Rostelecom
Version: n/a

Exploitation Mechanism

Camera reads network settings from QR code
Static IP settings from QR code copied to /config/ip-static file
After reboot, data from file inserted into bash command without escaping

Mitigation and Prevention

Immediate Steps to Take

Avoid using QR code configuration on affected devices
Implement network segmentation to limit exposure
Monitor for any unusual behavior or commands

Long-Term Security Practices

Regularly update camera firmware to patch vulnerabilities
Conduct security assessments to identify and address potential risks

Patching and Updates

Apply patches and updates provided by Rostelecom to fix the Bash command injection vulnerability