CVE-2021-38450 : What You Need to Know
Discover the critical CVE-2021-38450 affecting Trane's Tracer SC, Tracer SC+, and Tracer Concierge controllers. Learn about the impact, affected versions, exploitation mechanism, and mitigation steps.
A critical vulnerability has been discovered in Trane controllers, impacting Tracer SC, Tracer SC+, and Tracer Concierge products. The vulnerability allows attackers to manipulate code and disrupt the intended controller flow of the software.
Understanding CVE-2021-38450
This section provides insights into the nature of the vulnerability affecting Trane's controllers.
What is CVE-2021-38450?
The vulnerability in Trane controllers arises from improper input sanitization, enabling attackers to execute code changes that can compromise system integrity.
The Impact of CVE-2021-38450
With a CVSS base score of 9.9, this critical CVE poses a severe threat by allowing attackers to disrupt system availability and integrity, emphasizing the need for immediate mitigation.
Technical Details of CVE-2021-38450
Explore the specific technical aspects related to CVE-2021-38450 below.
Vulnerability Description
Trane controllers suffer from a code injection flaw due to inadequate input filtering, enabling attackers to interfere with controller operations.
Affected Systems and Versions
Tracer SC (all versions below 4.4 SP7), Tracer SC+ (all versions below 5.5 SP3), and Tracer Concierge (all versions below 5.5 SP3) are impacted by this vulnerability.
Exploitation Mechanism
The vulnerability permits threat actors to inject malicious code into the controllers, potentially altering their operational behavior.
Mitigation and Prevention
Learn about the steps to mitigate and prevent exploitation of CVE-2021-38450.
Immediate Steps to Take
Impacted users should contact Trane representatives to install updated firmware and adhere to recommended migration paths. Tracer SC products are reaching end-of-life by December 31, 2022, necessitating migration to Tracer SC+ for enhanced security.
Long-Term Security Practices
Trane has provided version-specific mitigation strategies:
- Tracer SC: Upgrade to v4.4 SP7 or higher
- Tracer SC+: Upgrade to v5.5 SP3 or higher
- Tracer Concierge: Upgrade to v5.5 SP3 or higher
Patching and Updates
Regularly monitor Trane's advisories and promptly apply firmware updates to safeguard systems against potential code injection attacks.