CVE-2020-7301 in Data Loss Prevention
Summary
by MITRE
Cross Site scripting vulnerability in McAfee Data Loss Prevention (DLP) ePO extension prior to 11.5.3 allows authenticated attackers to trigger alerts via the file upload tab in the DLP case management section.
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Analysis
by VulDB Data Team • 11/09/2020
The CVE-2020-7301 vulnerability represents a critical cross site scripting flaw within McAfee Data Loss Prevention ePO extension versions prior to 11.5.3, exposing organizations to significant security risks through authenticated attack vectors. This vulnerability specifically resides within the file upload functionality of the DLP case management section, creating a pathway for malicious actors to manipulate the system's alert generation mechanisms. The flaw enables authenticated attackers to inject malicious scripts that can execute within the context of other users' sessions, potentially compromising the integrity of the data loss prevention framework. The vulnerability's classification aligns with CWE-79, which specifically addresses cross site scripting vulnerabilities, and demonstrates how improper input validation can create persistent security weaknesses in enterprise security solutions. Organizations utilizing affected versions of McAfee DLP face elevated risks as this vulnerability can be exploited to execute arbitrary code, steal session cookies, and potentially escalate privileges within the security infrastructure.
The technical exploitation of this vulnerability occurs through the authenticated file upload tab functionality within the DLP case management interface, where insufficient input sanitization allows attackers to embed malicious scripts in uploaded files or associated metadata. When the system processes these malicious inputs during alert generation, the embedded scripts execute in the context of legitimate users' browsers, creating a persistent XSS attack vector. The attack requires authentication to the DLP system, which means that adversaries must first compromise valid credentials or exploit other authentication bypass mechanisms to reach the vulnerable functionality. This authentication requirement does not mitigate the severity of the vulnerability, as it represents an insider threat or credential compromise scenario that can be particularly damaging in enterprise environments where privileged access is often maintained. The vulnerability's impact extends beyond simple script execution, as it can be leveraged to harvest sensitive information from authenticated sessions, redirect users to malicious domains, or manipulate the DLP system's operational behavior.
The operational implications of CVE-2020-7301 are substantial for organizations relying on McAfee DLP for data protection and compliance monitoring. Attackers exploiting this vulnerability can manipulate the DLP alert system to either generate false positives that overwhelm security operations centers or suppress legitimate alerts that would otherwise detect data exfiltration attempts. This manipulation can create a false sense of security while simultaneously allowing actual data loss incidents to go undetected, undermining the fundamental purpose of the DLP solution. The vulnerability also presents risks to the broader enterprise security ecosystem, as compromised DLP systems may be used to gain insights into the organization's data handling practices or to identify other system weaknesses. Security teams may find their incident response processes disrupted by malicious alerts generated through this vulnerability, potentially leading to misallocation of resources and delayed responses to genuine threats.
Organizations should prioritize immediate remediation through the official McAfee patch releases for version 11.5.3 and subsequent updates, as this vulnerability represents a critical risk to data protection infrastructure. The patch addresses the root cause by implementing proper input validation and output encoding mechanisms within the file upload processing pipeline, ensuring that user-supplied data cannot be executed as scripts within the application context. Security teams should also implement network segmentation and access controls to limit the scope of potential exploitation, while monitoring for suspicious activity in the DLP case management section. Additional mitigations include implementing web application firewalls to detect and block malicious payloads, conducting thorough security assessments of the DLP environment, and establishing incident response procedures specifically addressing XSS vulnerabilities in security tools. This vulnerability demonstrates the critical importance of maintaining up-to-date security solutions and implementing layered defense strategies, as the compromise of security infrastructure tools can have cascading effects on overall enterprise security posture. The ATT&CK framework categorizes this vulnerability under T1059.007 for scripting and T1566 for credential harvesting, highlighting the multi-faceted attack vectors that can emerge from such flaws in enterprise security platforms.