CVE-2024-3468 in PI Web API
Summary
by MITRE • 06/13/2024
There is a vulnerability in AVEVA PI Web API that could allow malicious code to execute on the PI Web API environment under the privileges of an interactive user that was socially engineered to use API XML import functionality with content supplied by an attacker.
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Analysis
by VulDB Data Team • 06/13/2024
The vulnerability identified as CVE-2024-3468 affects the AVEVA PI Web API system, which serves as a critical interface for industrial automation and data management in process industries. This weakness represents a significant security risk within operational technology environments where system integrity and data protection are paramount. The vulnerability specifically targets the XML import functionality of the PI Web API, which is commonly used for data exchange and system integration within industrial control systems. The attack vector relies on social engineering tactics to manipulate legitimate users into executing malicious code through what appears to be normal API operations.
The technical flaw manifests in the XML import processing mechanism of the PI Web API where insufficient input validation and sanitization occurs. When users with interactive access to the system perform XML import operations, the system fails to properly validate the incoming XML content, allowing potentially malicious payloads to be executed within the context of the user's privileges. This represents a classic server-side request forgery vulnerability combined with a code execution flaw, where the system processes untrusted data without adequate security controls. The vulnerability operates under CWE-20, which describes improper input validation, and specifically aligns with CWE-94, which addresses inadequate control of generation of code.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with the ability to manipulate industrial data, potentially compromising the integrity of process control systems. In industrial environments where PI Web API serves as a central data hub, successful exploitation could lead to unauthorized modifications of critical process parameters, data corruption, or even system disruption. The reliance on social engineering for initial compromise makes this vulnerability particularly dangerous as it exploits human factors rather than purely technical weaknesses. Attackers can craft malicious XML content that appears legitimate to users, bypassing traditional security controls that might otherwise detect suspicious network traffic or file transfers.
Security professionals should consider this vulnerability in the context of the MITRE ATT&CK framework, particularly under the techniques of T1059 for command and script injection and T1203 for exploitation for privilege escalation. The vulnerability also aligns with the broader category of application-level attacks that target industrial control systems, where the attack surface often includes legacy systems that may not have robust security controls. Organizations using AVEVA PI Web API should implement immediate mitigations including restricting XML import functionality to trusted users only, implementing strict input validation for all XML content, and conducting regular security assessments of API endpoints. Additionally, user education and awareness programs should be enhanced to recognize social engineering attempts that might lead to system compromise through seemingly legitimate API operations.
The vulnerability demonstrates the critical importance of securing industrial API interfaces, which often serve as entry points for attackers targeting operational technology environments. Given the potential for cascading effects in industrial control systems, organizations must ensure that API security controls are comprehensive and include both technical safeguards and human factors considerations. Regular security updates and patch management processes should be prioritized for industrial control systems, as these environments often contain legacy components that may not receive timely security updates. The presence of this vulnerability in a widely used industrial data management platform underscores the need for continuous security monitoring and the implementation of defense-in-depth strategies to protect critical infrastructure from increasingly sophisticated attack vectors.