CVE-2022-36783 in FireFlow
Summary
by MITRE • 10/25/2022
AlgoSec FireFlow Reflected Cross-Site-Scripting (RXSS): A malicious user injects JavaScript code into a parameter called IntersectudRule on the search/result.html page. The malicious user changes the request from POST to GET and sends the URL to another user (victim). JavaScript code is executed on the browser of the other user.
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Analysis
by VulDB Data Team • 05/07/2025
The vulnerability identified as CVE-2022-36783 represents a critical reflected cross-site scripting flaw within the AlgoSec FireFlow application ecosystem. This security weakness resides in the search/result.html page where the application fails to properly sanitize user input parameters, specifically the IntersectudRule parameter. The vulnerability stems from the application's improper handling of HTTP request methods, allowing attackers to manipulate the request flow from POST to GET while maintaining the malicious payload within the URL structure.
The technical implementation of this vulnerability follows the classic reflected XSS attack pattern where malicious JavaScript code is injected into the application's response through user-controllable parameters. When a victim accesses a specially crafted URL containing the malicious script within the IntersectudRule parameter, the browser executes the injected code within the context of the victim's session. This execution occurs because the application directly incorporates user input into the HTML response without proper sanitization or encoding mechanisms, creating an environment where attacker-controlled scripts can run with the privileges of the authenticated user.
From an operational impact perspective, this vulnerability poses significant risks to organizations utilizing AlgoSec FireFlow for network security management and policy enforcement. The reflected nature of the attack means that victims must be tricked into clicking malicious links, often through social engineering tactics such as phishing emails or compromised websites. The attack vector demonstrates the application's insufficient input validation and output encoding practices, which are fundamental security controls that should prevent such scenarios. The vulnerability directly violates security principles outlined in CWE-79, which specifically addresses cross-site scripting flaws, and aligns with ATT&CK technique T1566.001 for initial access through spearphishing attachments or links.
The attack chain begins with an attacker identifying the vulnerable IntersectudRule parameter and crafting malicious JavaScript payloads that can execute in the context of other users. The attacker then converts the POST request to GET, embedding the payload in the URL, and delivers the malicious link to victims through various communication channels. Upon victim interaction, the browser renders the malicious script within the FireFlow interface, potentially allowing attackers to steal session cookies, redirect users to malicious sites, or perform actions on behalf of authenticated users. This vulnerability particularly impacts organizations that rely heavily on FireFlow for security policy management, as successful exploitation could lead to unauthorized access to sensitive network security configurations and potentially escalate to full system compromise.
Mitigation strategies should focus on implementing robust input validation and output encoding mechanisms throughout the application's codebase, particularly around the IntersectudRule parameter and similar user-controllable inputs. Organizations should enforce proper HTTP request method handling and implement Content Security Policy headers to limit script execution capabilities. The application should sanitize all user inputs using appropriate encoding techniques such as HTML entity encoding for output contexts, and implement proper parameter validation to reject suspicious input patterns. Additionally, security teams should conduct regular penetration testing and code reviews focusing on XSS vulnerabilities, while implementing web application firewalls to detect and block malicious payloads. The vulnerability highlights the critical need for defense-in-depth strategies and continuous security monitoring to prevent successful exploitation attempts.