CVE-2015-7604 in Splunk
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Splunk Web in Splunk Enterprise 6.2.x before 6.2.6 and Splunk Light 6.2.x before 6.2.6 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 06/19/2022
The CVE-2015-7604 vulnerability represents a critical cross-site scripting flaw within Splunk Web interface that affected multiple versions of Splunk Enterprise and Splunk Light products. This vulnerability resides in the web-based administrative console and user interface components of Splunk, which are essential for monitoring and analyzing security events across enterprise environments. The flaw specifically impacts versions 6.2.x prior to 6.2.6, making it a significant concern for organizations that relied on these specific releases for their security operations and log management capabilities.
The technical nature of this vulnerability stems from insufficient input validation and output encoding mechanisms within Splunk Web's processing pipeline. Attackers could exploit this weakness by crafting malicious payloads that would be executed in the context of other users' browsers when they accessed affected Splunk Web interfaces. The unspecified vectors suggest that multiple entry points within the web application could be leveraged for injection attacks, potentially including form fields, URL parameters, or other user-controllable input areas. This broad attack surface increases the likelihood of successful exploitation and makes the vulnerability particularly dangerous in enterprise environments where Splunk is used extensively for security monitoring.
The operational impact of CVE-2015-7604 extends far beyond simple script execution, as it provides attackers with persistent access to potentially sensitive data and administrative functions within Splunk environments. When exploited, this vulnerability could enable attackers to steal session cookies, redirect users to malicious sites, deface web interfaces, or even gain unauthorized access to underlying system resources. The implications are particularly severe for security teams who rely on Splunk for monitoring their network activities, as attackers could potentially manipulate or corrupt log data, hide malicious activities, or establish persistent backdoors through the compromised interface. This vulnerability directly violates the principle of least privilege and could lead to complete compromise of Splunk-based security monitoring systems.
Organizations affected by this vulnerability should immediately implement the patch provided by Splunk for versions 6.2.6 and later, which addresses the input validation gaps in the web interface. The remediation process should include comprehensive testing of the updated environment to ensure no regressions in functionality, particularly for custom dashboards, reports, or integrations that may have been relying on specific input handling behaviors. Security teams should also conduct thorough network scans to identify any potential exploitation attempts and implement additional monitoring for suspicious activities in Splunk logs. From a compliance perspective, this vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws, and could be categorized under ATT&CK technique T1059.007 for script execution through web interfaces, making it a critical concern for organizations following security frameworks like NIST SP 800-53 or ISO 27001 requirements for vulnerability management and incident response.