CVE-2021-22764 : Exploit Details and Defense Strategies
Learn about CVE-2021-22764, an Improper Authentication flaw in PowerLogic PM55xx, EGX100, and EGX300 impacting connectivity. Stay secure with mitigation steps.
A CWE-287: Improper Authentication vulnerability exists in PowerLogic PM55xx, PowerLogic PM8ECC, PowerLogic EGX100, and PowerLogic EGX300 that could lead to a loss of connectivity via Modbus TCP protocol when an attacker sends a specially crafted HTTP request.
Understanding CVE-2021-22764
This CVE identifies an authentication vulnerability in Schneider Electric's PowerLogic products that could potentially disrupt device connectivity.
What is CVE-2021-22764?
CVE-2021-22764 is a CWE-287: Improper Authentication vulnerability in PowerLogic PM55xx, PowerLogic PM8ECC, PowerLogic EGX100, and PowerLogic EGX300 that allows an attacker to disrupt device connectivity through a specially crafted HTTP request.
The Impact of CVE-2021-22764
The vulnerability can result in a loss of connectivity to the affected devices via the Modbus TCP protocol, potentially leading to service disruption and security risks.
Technical Details of CVE-2021-22764
This section delves into the specifics of the vulnerability affecting the PowerLogic devices.
Vulnerability Description
The vulnerability involves improper authentication in the PowerLogic PM55xx, PowerLogic PM8ECC, PowerLogic EGX100, and PowerLogic EGX300 devices, triggered by a malicious HTTP request.
Affected Systems and Versions
The affected systems include PowerLogic PM55xx, PowerLogic EGX100, and PowerLogic EGX300. For specific version details, refer to the associated security notification.
Exploitation Mechanism
The vulnerability can be exploited by sending a specially crafted HTTP request to the device, causing a disruption in Modbus TCP protocol connectivity.
Mitigation and Prevention
Discover the necessary steps to address and prevent the CVE-2021-22764 vulnerability.
Immediate Steps to Take
To mitigate the risk, users should apply relevant security patches and follow recommended best practices.
Long-Term Security Practices
Implementing robust access control measures and monitoring network traffic can enhance overall security posture.
Patching and Updates
Stay informed about security updates and promptly apply patches to address vulnerabilities and enhance device security.