CVE-2020-9012 in Identity Configuration
Summary
by MITRE
A cross-site scripting (XSS) vulnerability in the Import People functionality in Gluu Identity Configuration 4.0 allows remote attackers to inject arbitrary web script or HTML via the filename parameter.
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Analysis
by VulDB Data Team • 04/01/2024
The vulnerability identified as CVE-2020-9012 represents a critical cross-site scripting flaw within the Gluu Identity Configuration 4.0 platform, specifically affecting the Import People functionality. This security weakness resides in how the system processes user input through the filename parameter, creating an avenue for remote attackers to execute malicious web scripts or HTML code within the context of other users' browsers. The flaw fundamentally stems from inadequate input validation and output encoding mechanisms that fail to properly sanitize user-supplied data before incorporating it into web responses.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious filename parameter containing embedded script code that gets processed by the Import People module. This module is designed to handle user data imports, making it a critical component for identity management operations. When the system fails to properly validate or escape the filename input, any script code embedded within the parameter can be executed in the browser of unsuspecting users who subsequently interact with the affected functionality. The vulnerability classifies under CWE-79 which specifically addresses cross-site scripting flaws, where improper validation of input allows malicious scripts to be injected into web applications. This weakness enables attackers to perform session hijacking, deface web pages, steal sensitive information, or redirect users to malicious websites.
The operational impact of CVE-2020-9012 extends beyond simple script injection, as it can compromise the entire identity management infrastructure. Attackers leveraging this vulnerability could potentially access user sessions, modify user permissions, or gain unauthorized access to sensitive identity data within the Gluu platform. The attack surface is particularly concerning given that the Import People functionality is likely used by administrators and authorized personnel who may have elevated privileges within the system. This vulnerability directly violates the principle of least privilege and can undermine the integrity of the authentication and authorization mechanisms that the platform is designed to protect. The threat model aligns with ATT&CK technique T1566 which covers social engineering tactics, specifically focusing on the manipulation of web applications to execute malicious code.
Mitigation strategies for this vulnerability should prioritize immediate implementation of input validation and output encoding controls. Organizations must ensure that all user-supplied input, particularly in file handling operations, undergoes rigorous sanitization before being processed or displayed. The implementation of Content Security Policy headers can provide additional protection layers against script execution. Regular security updates and patches should be applied immediately upon vendor release, while comprehensive input validation should be implemented using allowlists for filename parameters. Security monitoring should include detection of suspicious file upload patterns and unusual import activities. Additionally, the principle of defense in depth requires that administrators implement network segmentation, access controls, and regular security assessments to prevent exploitation of similar vulnerabilities. The vulnerability highlights the importance of secure coding practices and input sanitization in identity management systems, particularly those handling sensitive user data and authentication processes.