CVE-2014-8521 in Network Data Loss Prevention
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in McAfee Network Data Loss Prevention (NDLP) before 9.3 allows remote authenticated users to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 07/09/2017
The CVE-2014-8521 vulnerability represents a critical cross-site scripting flaw within McAfee Network Data Loss Prevention version 9.2 and earlier releases. This vulnerability specifically affects the web-based management interface of the NDLP solution, creating a pathway for malicious actors to execute arbitrary code within the context of a victim's browser session. The flaw exists in the input validation mechanisms that process user-supplied data within the web application's interface, particularly in areas where user-provided content is rendered without proper sanitization or encoding. The vulnerability is classified as a remote authenticated attack vector, meaning that an attacker must first establish valid credentials to exploit the flaw, though this requirement does not significantly reduce the overall risk profile given the prevalence of credential compromise techniques in modern attack scenarios.
The technical implementation of this XSS vulnerability stems from inadequate sanitization of user input within the NDLP management console. When authenticated users interact with the web interface, the application fails to properly encode or validate data that is subsequently displayed to other users or rendered within the browser context. This weakness allows attackers to inject malicious JavaScript code, HTML content, or other malicious payloads through various input fields, form parameters, or URL parameters that are not adequately filtered. The vulnerability manifests across multiple vectors within the application's interface, including but not limited to configuration settings, user input fields, and report generation components. The flaw is particularly concerning as it affects the core management functionality of the security solution itself, potentially allowing attackers to escalate their privileges or manipulate the security controls that are meant to protect the network infrastructure.
The operational impact of this vulnerability extends beyond simple data theft or session hijacking, as it provides attackers with the capability to manipulate the NDLP system's behavior and potentially compromise the integrity of the entire data loss prevention strategy. An attacker who successfully exploits this vulnerability could gain access to sensitive configuration data, manipulate detection rules, or even redirect the NDLP appliance to send data to malicious endpoints. The attack surface is further expanded when considering that NDLP appliances are typically deployed in high-security environments where they serve as critical components for monitoring and controlling data exfiltration attempts. The vulnerability essentially undermines the trust model of the security solution, as an attacker with legitimate access credentials can subvert the very protection mechanisms that are supposed to safeguard sensitive information. This creates a particularly dangerous scenario where the attacker's malicious activities can remain undetected while they operate within the legitimate security infrastructure.
Organizations should implement immediate mitigations including patching to version 9.3 or later, which addresses the XSS vulnerability through proper input validation and output encoding mechanisms. Network segmentation and access control measures should be enhanced to limit the scope of potential exploitation, particularly by implementing principle of least privilege for NDLP management interfaces. Regular security assessments and code reviews should be conducted to identify similar vulnerabilities within the application's codebase, with particular attention to input validation routines and user-supplied content handling. The vulnerability aligns with CWE-79, which specifically addresses cross-site scripting flaws in web applications, and represents a classic example of how security controls within security products themselves can be compromised. From an ATT&CK perspective, this vulnerability maps to techniques involving credential access and privilege escalation, potentially enabling adversaries to move laterally within the network while maintaining persistence through manipulation of security controls. Organizations should also consider implementing web application firewalls and additional monitoring for suspicious activities within the NDLP management interface to detect potential exploitation attempts.