CVE-2017-6560 in Agora-Project
Summary
by MITRE
XSS in Agora-Project 3.2.2 exists with an index.php?ctrl=misc&action=[XSS]&editObjId=[XSS] attack.
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Analysis
by VulDB Data Team • 12/29/2019
The vulnerability identified as CVE-2017-6560 represents a cross-site scripting flaw within Agora-Project version 3.2.2 that allows remote attackers to execute malicious scripts in the context of a victim's browser. This weakness specifically manifests through the index.php endpoint when processing parameters related to the misc controller and action execution. The attack vector leverages the action parameter and editObjId parameter to inject malicious payloads that persist in the application's response handling. The vulnerability resides in the application's failure to properly sanitize and validate user input before rendering it within web pages, creating an environment where attacker-controlled data can be executed as script code.
This XSS vulnerability operates under CWE-79 which categorizes cross-site scripting as a critical web application security flaw that enables attackers to inject client-side scripts into web pages viewed by other users. The specific implementation flaw allows for reflected XSS attacks where malicious code injected through URL parameters gets executed when the page loads. The attack requires no authentication and can be delivered through crafted links or malicious payloads embedded in web content that users might encounter. The vulnerability impacts all users of the affected version regardless of their access level or role within the application's security model.
The operational impact of this vulnerability extends beyond simple script execution as it provides attackers with the capability to hijack user sessions, steal sensitive information, manipulate application data, and potentially escalate privileges within the application. An attacker could leverage this vulnerability to establish persistent access to user accounts, modify project data, or even redirect users to malicious sites. The reflected nature of the attack means that the malicious payload must be delivered through external means such as phishing emails or compromised websites, making it particularly dangerous in environments where users frequently interact with external content. This vulnerability undermines the integrity of user sessions and can lead to complete compromise of the application's user base.
Mitigation strategies for CVE-2017-6560 should focus on implementing comprehensive input validation and output encoding mechanisms throughout the application's codebase. The most effective approach involves sanitizing all user-supplied input before processing and ensuring that all dynamic content is properly escaped before being rendered in web pages. Organizations should implement Content Security Policy headers to limit script execution and prevent unauthorized code injection. Additionally, upgrading to a patched version of Agora-Project is essential as this vulnerability has been addressed in subsequent releases. Security measures should include regular input validation testing, web application firewalls, and monitoring for suspicious URL parameters that match known XSS attack patterns. The vulnerability aligns with ATT&CK technique T1203 which describes the use of web application vulnerabilities for privilege escalation and persistent access, emphasizing the need for comprehensive defensive measures beyond simple patching.