CVE-2021-38450

Trane Tracer Code Injection

Description

The affected controllers do not properly sanitize the input containing code syntax. As a result, an attacker could craft code to alter the intended controller flow of the software.

Remediation

Solution:

  • Affected users should contact a Trane representative to install updated firmware or request additional information. Please reference Trane service database number HUB-205962 when contacting the Trane office. Tracer SC is no longer actively developed, tested, or sold. Tracer SC will be considered end-of-life on December 31, 2022. Trane recommends identifying a migration plan for replacing the Tracer SC controller with the next-generation Tracer SC+ controller. Tracer SC+ can function as a drop-in replacement for Tracer SC, providing significant updates to security capabilities. Trane has identified the following specific mitigations: Tracer SC: Upgrade to v4.4 SP7 or later Tracer SC+: Upgrade to v5.5 SP3 or later Tracer Concierge: Upgrade to v5.5 SP3 or later

Category

9.9
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.28%
Third-Party Advisory cisa.gov
Affected: Trane Tracer SC
Affected: Trane Tracer SC+
Affected: Trane Tracer Concierge
Published at:
Updated at:

References

Link Tags
https://us-cert.cisa.gov/ics/advisories/icsa-21-266-02 third party advisory us government resource

Frequently Asked Questions

What is the severity of CVE-2021-38450?
CVE-2021-38450 has been scored as a critical severity vulnerability.
How to fix CVE-2021-38450?
To fix CVE-2021-38450: Affected users should contact a Trane representative to install updated firmware or request additional information. Please reference Trane service database number HUB-205962 when contacting the Trane office. Tracer SC is no longer actively developed, tested, or sold. Tracer SC will be considered end-of-life on December 31, 2022. Trane recommends identifying a migration plan for replacing the Tracer SC controller with the next-generation Tracer SC+ controller. Tracer SC+ can function as a drop-in replacement for Tracer SC, providing significant updates to security capabilities. Trane has identified the following specific mitigations: Tracer SC: Upgrade to v4.4 SP7 or later Tracer SC+: Upgrade to v5.5 SP3 or later Tracer Concierge: Upgrade to v5.5 SP3 or later
Is CVE-2021-38450 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-38450 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-38450?
CVE-2021-38450 affects Trane Tracer SC, Trane Tracer SC+, Trane Tracer Concierge.
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