CVE-2017-4016 in Network Data Loss Prevention
Summary
by MITRE
Web Server method disclosure in the server in McAfee Network Data Loss Prevention (NDLP) 9.3.x allows remote attackers to exploit and find another hole via HTTP response header.
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Analysis
by VulDB Data Team • 09/30/2020
The vulnerability identified as CVE-2017-4016 affects McAfee Network Data Loss Prevention version 9.3.x and represents a method disclosure issue within the web server component. This flaw manifests through HTTP response headers that inadvertently reveal information about the underlying server methods or capabilities, creating a potential information disclosure vector that attackers can leverage to gain intelligence about the target system. The vulnerability exists in the web server implementation of the McAfee NDLP solution, which is designed to monitor and protect network data from unauthorized access and exfiltration.
The technical nature of this vulnerability stems from improper handling of HTTP response headers within the web server module of the McAfee NDLP software. When the server processes requests, it includes specific headers in its responses that disclose server methods, capabilities, or implementation details that should remain hidden from external observers. This type of information disclosure can occur through various mechanisms including server version identification, method availability indicators, or other metadata that reveals internal system structure. The flaw essentially allows attackers to gather reconnaissance information without direct exploitation, creating a pathway for more sophisticated attacks.
The operational impact of this vulnerability extends beyond simple information disclosure, as it provides attackers with valuable reconnaissance data that can be used to identify potential attack vectors and system weaknesses. An attacker who successfully exploits this vulnerability can use the disclosed method information to craft more targeted attacks against the NDLP server, potentially leading to further exploitation opportunities. The vulnerability enables adversaries to understand the server's capabilities and structure, which can facilitate subsequent attacks such as method-based exploitation, service enumeration, or other advanced persistent threat activities. This information can be particularly valuable in planning coordinated attacks against the broader network infrastructure protected by the NDLP solution.
Organizations utilizing McAfee Network Data Loss Prevention 9.3.x should implement immediate mitigations to address this vulnerability, including updating to the latest available version that contains the necessary patches. The vulnerability aligns with CWE-200, which categorizes information exposure issues, and can be mapped to ATT&CK technique T1083, which covers directory and file system discovery. Additional protective measures should include network segmentation to limit access to the NDLP server, implementing proper header configuration to minimize information disclosure, and conducting regular security assessments to identify similar vulnerabilities. The remediation process should also involve monitoring for any suspicious activities that may indicate exploitation attempts and ensuring that all network components are properly configured to prevent unnecessary information exposure.