CVE-2017-3907 in Threat Intelligence Exchange
Summary
by MITRE
Code Injection vulnerability in the ePolicy Orchestrator (ePO) extension in McAfee Threat Intelligence Exchange (TIE) Server 2.1.0 and earlier allows remote attackers to execute arbitrary HTML code to be reflected in the response web page via unspecified vector.
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Analysis
by VulDB Data Team • 03/27/2023
The vulnerability identified as CVE-2017-3907 represents a critical code injection flaw within McAfee's Threat Intelligence Exchange (TIE) Server component, specifically affecting ePolicy Orchestrator extensions in versions 2.1.0 and earlier. This vulnerability resides within the web application layer of the TIE server, which serves as a critical integration point for threat intelligence sharing and management within enterprise security infrastructures. The flaw manifests as a reflected cross-site scripting vulnerability that enables remote attackers to inject malicious HTML code into web responses, creating a dangerous attack surface for unauthorized code execution within the target environment.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding within the TIE server's web interface handling mechanisms. Attackers can exploit this weakness by crafting malicious payloads that, when processed by the server, get reflected back to users in web responses without proper sanitization. This creates a classic reflected XSS vector where user-supplied data flows directly into web output without sufficient security controls. The vulnerability operates at the application layer and leverages the inherent trust relationships within the ePolicy Orchestrator framework, making it particularly dangerous as it can be exploited against authenticated users with varying privilege levels depending on the specific implementation details.
The operational impact of CVE-2017-3907 extends beyond simple code injection, as it provides attackers with potential access to sensitive threat intelligence data, system configuration information, and user session details. An attacker could leverage this vulnerability to establish persistent access to the TIE server, potentially compromising the entire threat intelligence sharing infrastructure. The attack could result in data exfiltration, privilege escalation, or the deployment of additional malware within the enterprise network. This vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws, and maps to ATT&CK technique T1566.001 for the initial access phase through spearphishing with a link, making it particularly dangerous in enterprise environments where threat intelligence systems are often considered trusted components.
Organizations should implement immediate mitigations including patching to versions 2.1.1 or later where the vulnerability has been addressed through proper input validation and output encoding controls. Network segmentation should be implemented to limit access to the TIE server, and web application firewalls should be configured to detect and block malicious input patterns. Additionally, security monitoring should be enhanced to detect anomalous behavior patterns that may indicate exploitation attempts. The vulnerability demonstrates the importance of secure coding practices in enterprise security applications and highlights the need for comprehensive input validation controls throughout the application lifecycle. Organizations should also conduct thorough security assessments of their threat intelligence infrastructure to identify similar vulnerabilities in other components and ensure proper security controls are in place to protect against such attacks.