CVE-2021-22745 : What You Need to Know
Learn about CVE-2021-22745, an Improper Check for Unusual or Exceptional Conditions vulnerability impacting Triconex Model 3009 MP on Tricon V11.3.x systems. Understand the technical details, impact, and mitigation steps.
This article provides details about CVE-2021-22745, which relates to an Improper Check for Unusual or Exceptional Conditions vulnerability in Triconex Model 3009 MP installed on Tricon V11.3.x systems.
Understanding CVE-2021-22745
This CVE ID is unique and distinct from other related vulnerabilities such as CVE-2021-22742, CVE-2021-22744, CVE-2021-22746, and CVE-2021-22747.
What is CVE-2021-22745?
The vulnerability involves a scenario where the module might reset due to malformed TriStation packets being received by the TCM when the write-protect keyswitch is in the program position.
The Impact of CVE-2021-22745
The vulnerability could potentially be exploited to cause a module reset, affecting the normal operation of the Triconex systems.
Technical Details of CVE-2021-22745
The following technical aspects of CVE-2021-22745 are crucial to understand:
Vulnerability Description
The issue arises from an Improper Check for Unusual or Exceptional Conditions vulnerability in Triconex Model 3009 MP on Tricon V11.3.x systems.
Affected Systems and Versions
Triconex Model 3009 MP installed on Tricon V11.3.x systems are affected by this vulnerability.
Exploitation Mechanism
Exploiting this vulnerability involves sending malformed TriStation packets to the TCM when the write-protect keyswitch is in the program position.
Mitigation and Prevention
To address CVE-2021-22745, the following actions are recommended:
Immediate Steps to Take
- Ensure that security patches or updates provided by the vendor are applied promptly.
- Implement network security measures to control and monitor traffic to affected systems.
Long-Term Security Practices
- Conduct regular security assessments and audits to identify and address vulnerabilities proactively.
- Train personnel on secure practices and response protocols to mitigate security risks.
Patching and Updates
Stay informed about security advisories from the vendor and promptly apply any patches or updates released to address this vulnerability.