CVE-2022-26516 Explained : Impact and Mitigation

This article provides detailed information about CVE-2022-26516, a vulnerability affecting Red Lion's DA50N series products.

Understanding CVE-2022-26516

CVE-2022-26516 is a vulnerability that allows authorized users to install a maliciously modified package file when updating the device via the web user interface.

What is CVE-2022-26516?

Authorized users may unknowingly use a compromised package file obtained from an unauthorized source during device updates, leading to potential security risks.

The Impact of CVE-2022-26516

The vulnerability has a CVSS base score of 8.4, indicating a high severity level with significant impacts on confidentiality, integrity, and availability. It requires high privileges and user interaction to exploit, potentially leading to unauthorized access and data compromise.

Technical Details of CVE-2022-26516

Vulnerability Description

The vulnerability stems from insufficient verification of data authenticity during package file installation, allowing for the execution of malicious code.

Affected Systems and Versions

All versions of the Red Lion DA50N series products are affected by this vulnerability.

Exploitation Mechanism

The vulnerability can be exploited by authorized users updating the device via the web user interface with compromised package files.

Mitigation and Prevention

Immediate Steps to Take

Red Lion recommends the following immediate steps to mitigate the risk:

Avoid installing image files from unofficial sources.
Verify the validity of the server's TLS certificate when downloading images.
Securely store package files or images before deployment.
Limit physical access to the device to prevent unauthorized installations.

Long-Term Security Practices

Change default UI passwords to adhere to security best practices.
Modify default account passwords such as admin, rlcuser, and techsup.
Disable unnecessary services like SSH and telnet unless required.
Avoid reusing passwords across different resources.
Restrict access to configuration files containing sensitive credentials.
Ensure secure credentials are used for optional services configuration.
Enable only essential services necessary for the device's operation.

Patching and Updates

Red Lion has declared the DA50N series as end-of-life and will not release a software update. Users are advised to apply workarounds and consider upgrading to DA50A or DA70A devices to address these vulnerabilities.