CVE-2022-45789 : Exploit Details and Defense Strategies
Learn about CVE-2022-45789, a CWE-294 vulnerability in Schneider Electric products causing unauthorized execution of Modbus functions. Find out about the impact, affected systems, and mitigation steps.
A CWE-294 vulnerability has been identified in Schneider Electric products, allowing unauthorized execution of Modbus functions by hijacking an authenticated session.
Understanding CVE-2022-45789
This CVE relates to an Authentication Bypass by Capture-replay vulnerability that affects various Schneider Electric products.
What is CVE-2022-45789?
A CWE-294: Authentication Bypass by Capture-replay vulnerability exists in Schneider Electric products, leading to unauthorized execution of Modbus functions through a hijacked authenticated Modbus session.
The Impact of CVE-2022-45789
The vulnerability poses a high severity risk with a CVSS base score of 8.1 due to its high impact on confidentiality, integrity, and availability, making it crucial to address promptly.
Technical Details of CVE-2022-45789
This section outlines the vulnerability description, affected systems, and the exploitation mechanism.
Vulnerability Description
The CWE-294 vulnerability allows attackers to execute unauthorized Modbus functions on controllers through hijacked authenticated sessions, affecting various Schneider Electric products.
Affected Systems and Versions
Schneider Electric products impacted include EcoStruxure Control Expert, EcoStruxure Process Expert, Modicon M340 CPU, Modicon M580 CPU, and Modicon M580 CPU Safety, across all versions.
Exploitation Mechanism
Attackers can exploit this vulnerability by bypassing authentication and replaying captured sessions to execute unauthorized Modbus functions on affected products.
Mitigation and Prevention
To address CVE-2022-45789, immediate steps should be taken along with implementing long-term security practices and applying necessary patches and updates.
Immediate Steps to Take
Organizations should review and follow the security recommendations provided by Schneider Electric, including any specific guidelines or mitigations to reduce the risk associated with the vulnerability.
Long-Term Security Practices
Implementing network segmentation, restricting access to critical systems, and ensuring robust authentication mechanisms can help enhance overall security posture and prevent similar vulnerabilities in the future.
Patching and Updates
Regularly monitoring for security advisories from Schneider Electric and promptly applying patches and updates to the affected products can help mitigate the risk associated with CVE-2022-45789.