CVE-2022-40140 in Apex One
Summary
by MITRE • 09/19/2022
An origin validation error vulnerability in Trend Micro Apex One and Apex One as a Service could allow a local attacker to cause a denial-of-service on affected installations.
Please note: an attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
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Analysis
by VulDB Data Team • 10/21/2022
The vulnerability identified as CVE-2022-40140 represents a critical origin validation error within Trend Micro Apex One and Apex One as a Service platforms, creating a potential denial-of-service condition that could severely impact organizational security infrastructure. This weakness resides in the application's failure to properly validate the source of incoming requests or data streams, allowing malicious actors to manipulate system behavior through crafted inputs that bypass normal security controls. The vulnerability specifically affects systems where Trend Micro's endpoint protection software is deployed, potentially compromising the integrity of the security ecosystem by enabling unauthorized disruption of critical services.
The technical flaw manifests as an origin validation error that occurs when the system fails to properly authenticate or verify the legitimacy of data sources attempting to interact with the Apex One platform. This validation failure creates a pathway for local attackers to exploit the system's trust mechanisms, enabling them to inject malicious payloads or manipulate system processes in ways that could lead to complete service disruption. The vulnerability operates at a fundamental level where the system's ability to distinguish between legitimate and malicious inputs becomes compromised, allowing attackers to leverage seemingly benign system interactions to create destructive outcomes. According to CWE classification, this vulnerability maps to CWE-20: Improper Input Validation, which encompasses issues where systems fail to properly validate input parameters, leading to unexpected behavior and potential system compromise.
The operational impact of CVE-2022-40140 extends beyond simple service interruption to potentially create cascading failures within enterprise security infrastructures that rely on Trend Micro Apex One for endpoint protection. When exploited, this vulnerability could allow attackers to render critical security services unavailable, leaving organizations vulnerable to additional threats while simultaneously disrupting normal security operations. The local execution requirement means that attackers must first gain low-privileged access to the system, but once achieved, they can leverage this vulnerability to escalate their impact significantly. This creates a scenario where initial footholds can be quickly converted into major service disruptions, making the vulnerability particularly dangerous in environments where endpoint security is critical for maintaining network integrity and protecting against advanced persistent threats. The attack pattern aligns with ATT&CK technique T1499.004: Endpoint Denial of Service, which specifically addresses methods of disabling endpoint security services through various attack vectors.
Mitigation strategies for CVE-2022-40140 should focus on both immediate remediation and long-term architectural improvements to prevent similar origin validation failures. Organizations must prioritize applying official patches and updates provided by Trend Micro to address the specific validation error in the Apex One platform. System administrators should implement additional monitoring controls to detect anomalous behavior patterns that might indicate exploitation attempts, particularly around authentication and authorization mechanisms. Network segmentation and privilege separation can help limit the potential impact of successful exploitation by preventing lateral movement and reducing the attack surface available to local attackers. Security teams should also consider implementing robust input validation controls at multiple layers of the system architecture, ensuring that all data sources are properly authenticated and validated before being processed by critical security services. The vulnerability highlights the importance of maintaining strong security boundaries even within trusted internal networks, as local privilege escalation paths can quickly lead to system-wide compromise and disruption of essential security functions.