CVE-2017-6562 in Agora-Project
Summary
by MITRE
XSS in Agora-Project 3.2.2 exists with an index.php?ctrl=file&targetObjId=fileFolder-2&targetObjIdChild=[XSS] attack.
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Analysis
by VulDB Data Team • 12/29/2019
The vulnerability identified as CVE-2017-6562 represents a cross-site scripting flaw within the Agora-Project version 3.2.2 web application. This security weakness manifests through a specific attack vector involving the index.php script with parameters controlling file operations. The vulnerability occurs when user-supplied input flows directly into the application's output without proper sanitization or encoding mechanisms, creating an environment where malicious scripts can be injected and executed within the context of other users' browsers.
The technical exploitation of this vulnerability involves manipulating the targetObjIdChild parameter within the file management functionality of the application. When an attacker crafts a malicious payload and injects it through this parameter, the application fails to adequately validate or escape the input before rendering it in the web page response. This allows the injected script code to execute in the victim's browser session, potentially enabling attackers to steal session cookies, perform unauthorized actions on behalf of users, or redirect victims to malicious websites. The flaw specifically resides in the application's failure to implement proper input validation and output encoding practices for dynamic content generation.
The operational impact of this vulnerability extends beyond simple script execution as it fundamentally compromises user trust and application integrity. Attackers can leverage this weakness to establish persistent access to user sessions, potentially gaining administrative privileges or accessing sensitive project data managed through the Agora-Project platform. The vulnerability affects any user who interacts with the file management features of the application, making it particularly dangerous in collaborative environments where multiple users share project resources. This type of vulnerability directly violates security principles outlined in the OWASP Top Ten and represents a classic example of improper input handling that can lead to complete application compromise.
Mitigation strategies for CVE-2017-6562 should focus on implementing robust input validation and output encoding mechanisms throughout the application's codebase. The most effective approach involves sanitizing all user-supplied input before processing or displaying it within the application interface, particularly for parameters that control dynamic content generation. Security measures should include implementing proper HTML escaping for all output rendered to users, utilizing Content Security Policy headers to restrict script execution, and employing parameterized queries or input validation libraries to prevent malicious code injection. Additionally, the application should be updated to a patched version that addresses this specific vulnerability, as the original 3.2.2 release contains known security flaws that have been resolved in subsequent releases. This vulnerability aligns with CWE-79 which categorizes cross-site scripting flaws and relates to techniques documented in the ATT&CK framework under the web application attack patterns, specifically targeting the execution of malicious scripts within user sessions to gain unauthorized access to sensitive information and system resources.