CVE-2022-43971 Explained : Impact and Mitigation
Learn about CVE-2022-43971, an arbitrary code execution vulnerability in Linksys WUMC710 Wireless-AC Universal Media Connector firmware <= 1.0.02. Understand the impact, technical details, and mitigation steps.
An arbitrary code execution vulnerability exists in Linksys WUMC710 Wireless-AC Universal Media Connector with firmware <= 1.0.02 (build3). An authenticated attacker with administrator privileges can exploit this flaw to execute arbitrary commands on the underlying Linux operating system as root.
Understanding CVE-2022-43971
This CVE identifies an arbitrary code execution vulnerability in Linksys WUMC710 Wireless-AC Universal Media Connector.
What is CVE-2022-43971?
CVE-2022-43971 is a security vulnerability in the Linksys WUMC710 Wireless-AC Universal Media Connector that allows an attacker to execute arbitrary commands on the device's operating system.
The Impact of CVE-2022-43971
The impact of this vulnerability is high as it enables an authenticated attacker to run commands with root privileges on the affected system.
Technical Details of CVE-2022-43971
The vulnerability arises due to unvalidated user input in the construction of a system command within the httpd binary of the affected device.
Vulnerability Description
The do_setNTP function within the httpd binary uses unvalidated user input, allowing an attacker to execute arbitrary commands on the Linux OS as root.
Affected Systems and Versions
- Vendor: Linksys
- Product: Linksys WUMC710 Wireless-AC Universal Media Connector
- Affected Versions: Firmware less than or equal to 1.0.02 (build3)
Exploitation Mechanism
An authenticated attacker with administrator privileges can exploit this vulnerability over the network via a malicious GET or POST request to /setNTP.cgi.
Mitigation and Prevention
To mitigate the risks associated with CVE-2022-43971, it is crucial to take immediate action and implement long-term security practices.
Immediate Steps to Take
Users are advised to update the firmware to a version higher than 1.0.02 (build3) to address the vulnerability. Additionally, restrict network access to the device and monitor for any suspicious activity.
Long-Term Security Practices
Regularly update the firmware and employ network segmentation to minimize the attack surface. Conduct security audits and train personnel on best practices to enhance overall security posture.
Patching and Updates
Stay informed about security bulletins from Linksys and apply patches promptly to protect against known vulnerabilities.