CVE-2022-24796 Explained : Impact and Mitigation

RaspberryMatic, the open-source operating system for smart home devices, is affected by a critical Remote Command Injection vulnerability. Attackers can exploit this flaw to execute arbitrary commands and compromise the system. It is crucial for users to update to the latest version to stay secure.

Understanding CVE-2022-24796

RaspberryMatic operating system has a Remote Command Injection vulnerability that impacts versions between

2.31.25.20180428

and

3.63.8.20220330

. This security issue allows unauthenticated attackers to execute malicious commands with root privileges, potentially leading to a complete system compromise.

What is CVE-2022-24796?

CVE-2022-24796 is a critical vulnerability in RaspberryMatic that enables remote, unauthenticated attackers to execute arbitrary operating system commands via the WebUI interface. By leveraging shell metacharacters in the HTTP query string, attackers can achieve full system compromise.

The Impact of CVE-2022-24796

The impact of this vulnerability is severe, with a CVSS base score of 10 out of 10. It poses a critical threat to confidentiality, integrity, and availability. Attackers can exploit this flaw to gain control of the system and all its components, leading to potential data breaches and system manipulation.

Technical Details of CVE-2022-24796

This section dives into the technical aspects of the vulnerability, including its description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability arises from missing input validation/sanitization in the file upload mechanism of the WebUI interface, allowing for Remote Code Execution. Attackers can inject commands that are executed with root privileges, facilitating a complete system compromise.

Affected Systems and Versions

Versions of RaspberryMatic between

2.31.25.20180428

and

3.63.8.20220330

are affected by this vulnerability. Users operating on these versions are at risk of exploitation and are strongly advised to update to version

3.63.8.20220330

or newer.

Exploitation Mechanism

The exploitation of this vulnerability occurs through shell metacharacters in the HTTP query string. By sending specially crafted requests to the WebUI interface, attackers can execute arbitrary commands on the target system as root, leading to a complete compromise.

Mitigation and Prevention

To mitigate the risks associated with CVE-2022-24796, users are recommended to take immediate steps and adopt long-term security practices.

Immediate Steps to Take

Update RaspberryMatic to version

3.63.8.20220330

or the latest available release to patch the vulnerability.

Long-Term Security Practices

Regularly update the operating system and all software components to address security vulnerabilities promptly.

Patching and Updates

Stay informed about security advisories and patches released by RaspberryMatic to ensure the system is protected against known vulnerabilities.