CVE-2022-28223 : Security Advisory and Response
Learn about CVE-2022-28223, a critical privilege escalation vulnerability in Tekon KIO devices allowing admin users to escalate to root via a malicious Lua plugin. Understand the impact, technical details, and mitigation steps.
Tekon KIO devices through 2022-03-30 allow an authenticated admin user to escalate privileges to root by uploading a malicious Lua plugin.
Understanding CVE-2022-28223
This CVE describes a privilege escalation vulnerability in Tekon KIO devices that enables an authenticated admin user to gain root privileges by uploading a malicious Lua plugin.
What is CVE-2022-28223?
The CVE-2022-28223 vulnerability in Tekon KIO devices allows an authenticated admin user to escalate their privileges to root by exploiting a flaw in uploading Lua plugins.
The Impact of CVE-2022-28223
The impact of CVE-2022-28223 is critical, with a CVSS v3.1 base score of 9.1, indicating a high risk. The attack complexity is low, but the impact on confidentiality, integrity, and availability is high. The vulnerability requires high privileges and can change the scope without user interaction.
Technical Details of CVE-2022-28223
This section provides detailed technical information on the vulnerability.
Vulnerability Description
The vulnerability allows an authenticated admin user to upload a malicious Lua plugin, leading to privilege escalation to root.
Affected Systems and Versions
Tekon KIO devices are affected through 2022-03-30 by this privilege escalation flaw.
Exploitation Mechanism
The vulnerability can be exploited by an authenticated admin user uploading a malicious Lua plugin to escalate their privileges to root.
Mitigation and Prevention
Protecting systems from CVE-2022-28223 requires immediate action and long-term security practices.
Immediate Steps to Take
Immediately restrict access to the device, apply vendor patches, and monitor for any unauthorized activities.
Long-Term Security Practices
Implement the principle of least privilege, regularly update and patch devices, conduct security training for employees, and monitor device activities.
Patching and Updates
Regularly check for security updates from Tekon for the KIO devices and apply them promptly to mitigate the risk of privilege escalation due to uploading malicious Lua plugins.