CVE-2021-27663 : Security Advisory and Response
Learn about CVE-2021-27663, a critical vulnerability in Johnson Controls CEM Systems AC2000 versions 10.1 through 10.5, allowing remote unauthorized access without adequate authorization. Apply the necessary patch for mitigation.
A vulnerability in versions 10.1 through 10.5 of Johnson Controls CEM Systems AC2000 allows a remote attacker to access the system without adequate authorization. Applying the necessary patch is crucial to mitigate this security issue.
Understanding CVE-2021-27663
This CVE refers to a critical vulnerability present in versions 10.1 through 10.5 of Johnson Controls CEM Systems AC2000. The vulnerability allows unauthorized remote access to the system, posing a significant risk to affected users.
What is CVE-2021-27663?
The vulnerability in Johnson Controls CEM Systems AC2000 version 10.1 through 10.5 enables a remote attacker to gain unauthorized access to the system without adequate permissions.
The Impact of CVE-2021-27663
With a CVSS base score of 8.2 (High Severity), the vulnerability poses a high risk by allowing attackers to compromise the confidentiality of the system without requiring any user interaction. This could lead to unauthorized access to sensitive information.
Technical Details of CVE-2021-27663
The technical details of CVE-2021-27663 include:
Vulnerability Description
The vulnerability in Johnson Controls CEM Systems AC2000 version 10.1 through 10.5 arises from improper authorization, allowing remote attackers to access the system without adequate privileges.
Affected Systems and Versions
Systems running Johnson Controls CEM Systems AC2000 versions 10.1 through 10.5 are impacted by this vulnerability.
Exploitation Mechanism
The vulnerability can be exploited remotely via the network with low attack complexity, requiring no user interaction.
Mitigation and Prevention
To address CVE-2021-27663, it is essential to take immediate steps for mitigation and ensure long-term security practices.
Immediate Steps to Take
Affected users should apply the provided patch to all affected versions and implementations. Additionally, the fix will be included in version 10.5 Server Feature Pack 2, version 10.6, and in all future releases.
Long-Term Security Practices
Implement stringent access controls, conduct regular security audits, and train users on secure practices to enhance overall security posture.
Patching and Updates
For access to the patch, affected users should reach out to their CEM support team via the provided link.