CVE-2022-23441 in FortiEDR
Summary
by MITRE • 04/06/2022
A use of hard-coded cryptographic key vulnerability [CWE-321] in FortiEDR versions 5.0.2, 5.0.1, 5.0.0, 4.0.0 may allow an unauthenticated attacker on the network to disguise as and forge messages from other collectors.
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Analysis
by VulDB Data Team • 04/08/2022
The vulnerability identified as CVE-2022-23441 represents a critical security flaw in FortiEDR endpoint detection and response software at versions 5.0.2, 5.0.1, 5.0.0, and 4.0.0. This issue manifests as a use of hard-coded cryptographic key vulnerability classified under CWE-321, which fundamentally undermines the security architecture of the affected system. The flaw resides in the cryptographic implementation where developers embedded static keys directly into the software code rather than generating dynamic, secure keys for each operational context. This design decision creates a persistent security weakness that persists across all installations and updates of the vulnerable versions.
The technical exploitation of this vulnerability enables an unauthenticated attacker positioned within the network to leverage the hard-coded cryptographic key for message forgery and identity impersonation. Specifically, the attacker can forge communications that appear to originate from legitimate collectors within the FortiEDR environment, effectively bypassing authentication mechanisms and gaining unauthorized access to sensitive operational data. This capability directly violates the principles of authentication and integrity as defined in the NIST Cybersecurity Framework and aligns with ATT&CK technique T1550.001 for use of stolen credentials and T1071.004 for application layer protocol. The forged messages can manipulate the endpoint detection and response system's behavior, potentially leading to false positives, missed threat detections, or complete system compromise.
The operational impact of this vulnerability extends beyond simple message forgery to encompass significant risks to endpoint security monitoring and incident response capabilities. Organizations relying on FortiEDR for threat detection and response may experience compromised security posture where malicious actors can evade detection by masquerading as legitimate system components. This vulnerability undermines the trust model within the security infrastructure, as the cryptographic mechanisms designed to ensure message authenticity and system integrity become ineffective. The attack surface expands to include any network entity that can communicate with the FortiEDR system, making it particularly dangerous in environments where network segmentation is not properly implemented. The vulnerability also creates opportunities for lateral movement within the network as attackers can manipulate collector communications to gain deeper access to the system infrastructure.
Organizations must implement immediate remediation measures including updating to patched versions of FortiEDR that address the hard-coded key vulnerability. The mitigation strategy should encompass not only software updates but also network segmentation and monitoring of collector communications to detect potential exploitation attempts. Security teams should conduct comprehensive vulnerability assessments to identify any potential exploitation that may have occurred prior to patching. Additionally, the incident response plan should include procedures for validating the integrity of collector communications and monitoring for anomalous behavior patterns that might indicate successful exploitation of the vulnerability. This vulnerability highlights the critical importance of proper cryptographic key management practices and demonstrates how a single implementation flaw can compromise entire security architectures, emphasizing the need for adherence to security standards such as NIST SP 800-57 for cryptographic key management and the OWASP Top 10 for secure coding practices.