CVE-2014-8302 in Splunk
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Splunk Web in Splunk Enterprise 6.1.x before 6.1.4, 6.0.x before 6.0.6, and 5.0.x before 5.0.10 allows remote attackers to inject arbitrary web script or HTML via vectors related to dashboard.
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Analysis
by VulDB Data Team • 02/23/2022
The CVE-2014-8302 vulnerability represents a critical cross-site scripting flaw within Splunk Web, a widely deployed enterprise security platform used for monitoring, analyzing, and visualizing machine-generated data. This vulnerability specifically affects Splunk Enterprise versions 6.1.x prior to 6.1.4, 6.0.x prior to 6.0.6, and 5.0.x prior to 5.0.10, making it a significant concern for organizations relying on these older versions for their security operations and log management. The vulnerability resides in the dashboard functionality of Splunk Web, which serves as the primary user interface for creating, viewing, and interacting with various data visualizations and reports that security teams depend upon for threat detection and incident response.
The technical flaw manifests as an insufficient input validation mechanism within the dashboard component of Splunk Web, where user-supplied data is not properly sanitized before being rendered in web pages. Attackers can exploit this weakness by crafting malicious input through dashboard parameters, search queries, or other interactive elements that are subsequently processed and displayed without adequate sanitization. This allows remote threat actors to inject arbitrary JavaScript code, HTML tags, or other malicious content that executes in the context of other users' browsers when they view affected dashboards. The vulnerability is particularly dangerous because it leverages the trust relationship between the Splunk Web interface and its users, enabling attackers to execute code in the victim's browser session with the privileges of the logged-in user.
The operational impact of this vulnerability extends beyond simple data theft or defacement, as it can enable sophisticated attack chains that compromise entire security infrastructures. An attacker who successfully exploits this vulnerability can potentially steal session cookies, redirect users to malicious sites, or execute persistent backdoors within the Splunk environment. Given that Splunk is commonly used for security monitoring and incident response, such an attack could provide threat actors with access to sensitive security data, including logs, alerts, and forensic evidence that organizations rely upon for detecting and investigating security incidents. The vulnerability also poses risks to business continuity as it could enable attackers to manipulate dashboards to hide malicious activity or disrupt security operations by corrupting monitoring data. This vulnerability aligns with CWE-79, which specifically addresses Cross-Site Scripting flaws, and represents a classic example of how insecure input handling can lead to privilege escalation and data compromise within web applications. The attack vector is particularly concerning from an ATT&CK perspective as it enables techniques such as credential access through session hijacking and initial access via malicious web content, making it a valuable entry point for broader attack campaigns.
Organizations affected by this vulnerability should prioritize immediate remediation through patching to the latest stable versions of Splunk Enterprise, specifically ensuring all systems are updated to versions 6.1.4, 6.0.6, or 5.0.10 respectively. Additionally, administrators should implement network segmentation to limit access to Splunk Web interfaces, enforce strict input validation for dashboard parameters, and consider implementing web application firewalls to detect and block malicious payloads. Regular security assessments should include verification of patch compliance and monitoring for suspicious dashboard activity. The vulnerability also underscores the importance of maintaining up-to-date security practices and implementing defense-in-depth strategies that reduce the attack surface of critical security tools. Organizations should also consider implementing user education programs to help identify potentially malicious dashboard content and establish incident response procedures specifically tailored to address web-based attacks targeting security monitoring platforms.