CVE-2020-7328 in MVision Endpoint
Summary
by MITRE • 11/11/2020
External entity attack vulnerability in the ePO extension in McAfee MVISION Endpoint prior to 20.11 allows remote attackers to gain control of a resource or trigger arbitrary code execution via improper input validation of an HTTP request, where the content for the attack has been loaded into ePO by an ePO administrator.
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Analysis
by VulDB Data Team • 12/05/2020
The vulnerability identified as CVE-2020-7328 represents a critical external entity attack flaw within the McAfee MVISION Endpoint ePO extension software. This weakness exists in versions prior to 20.11 and creates a significant security risk by allowing remote attackers to execute arbitrary code or gain unauthorized control over system resources. The vulnerability specifically manifests through improper input validation mechanisms within HTTP request processing, creating an attack surface that can be exploited by malicious actors without requiring direct system access.
The technical flaw stems from inadequate validation of external entity references within the ePO extension's processing pipeline. When an ePO administrator loads content into the system, this content becomes susceptible to malicious manipulation through carefully crafted HTTP requests that contain external entity declarations. The vulnerability aligns with CWE-611, which categorizes improper input validation of external entities as a primary weakness pattern. Attackers can leverage this flaw by constructing HTTP requests that reference malicious external entities, potentially triggering code execution or resource manipulation within the target environment.
This vulnerability presents substantial operational impact for organizations relying on McAfee MVISION Endpoint for security management. The requirement for an ePO administrator to load malicious content into the system creates a unique attack vector that combines social engineering with technical exploitation. Attackers can potentially manipulate administrator workflows by injecting malicious content through legitimate administrative channels, making detection more challenging. The remote execution capability means attackers can operate from external networks without physical access to the target systems, significantly expanding their attack surface.
Organizations should immediately implement mitigation strategies including upgrading to McAfee MVISION Endpoint version 20.11 or later, which contains the necessary patches to address this vulnerability. Network segmentation and monitoring of HTTP traffic to ePO servers should be enhanced to detect suspicious requests containing external entity references. Security teams should conduct comprehensive audits of existing ePO content and implement strict content validation procedures for all administrator-loaded resources. Additionally, implementing principle of least privilege for ePO administrator accounts and enabling detailed logging of administrative activities can help detect potential exploitation attempts. The ATT&CK framework categorizes this vulnerability under T1059.005 for remote code execution through web services, emphasizing the need for comprehensive network security controls and regular vulnerability assessments to prevent successful exploitation attempts.