CVE-2016-2139 in kippo-graph
Summary
by MITRE • 07/28/2022
In kippo-graph before version 1.5.1, there is a cross-site scripting vulnerability in $file_link in class/KippoInput.class.php.
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Analysis
by VulDB Data Team • 08/28/2022
The vulnerability CVE-2016-2139 represents a cross-site scripting flaw in kippo-graph version 1.5.0 and earlier, specifically within the KippoInput.class.php file where the $file_link variable is processed. This issue arises from inadequate input validation and output sanitization mechanisms that fail to properly escape or filter user-supplied data before rendering it in web contexts. The vulnerability stems from the application's insufficient handling of potentially malicious input that could be injected through file path references, allowing attackers to execute arbitrary JavaScript code in the context of authenticated users' browsers.
This cross-site scripting vulnerability operates under CWE-79 which categorizes improper neutralization of input during web page generation as a fundamental weakness in web application security. The flaw enables attackers to inject malicious scripts that can hijack user sessions, steal sensitive information, or manipulate the application interface. The vulnerability is particularly concerning because it occurs in a component that handles file link processing, suggesting that an attacker could exploit this through manipulated file paths or directory references within the kippo-graph interface. The impact extends beyond simple script execution as it can potentially lead to privilege escalation or further exploitation of the underlying system.
The operational impact of this vulnerability is significant for organizations using kippo-graph for security monitoring and log analysis. Attackers could leverage this flaw to gain unauthorized access to the application, potentially compromising the integrity of security data and monitoring capabilities. The vulnerability affects the application's ability to securely process file references, which could lead to unauthorized data access or manipulation of the security monitoring environment. Additionally, the presence of such a flaw in a security tool itself creates a dangerous paradox where the very application designed to detect and prevent security breaches becomes vulnerable to exploitation.
Mitigation strategies should focus on implementing proper input validation and output encoding mechanisms to prevent XSS attacks. The most effective approach involves updating to kippo-graph version 1.5.1 or later, which contains the necessary patches to address this vulnerability. Organizations should also implement content security policies to limit script execution within the application context, and conduct regular security assessments of web applications to identify similar vulnerabilities. The remediation process should include thorough code reviews focusing on input handling and output sanitization, particularly in areas where user-supplied data is processed and displayed. Security teams should also consider implementing web application firewalls to provide additional protection layers against such attacks, aligning with ATT&CK technique T1213 which addresses credential access through application vulnerabilities.