CVE-2024-57773
📋 TL;DR
This cross-site scripting (XSS) vulnerability in JFinalOA allows attackers to inject malicious scripts into the openSelectManyUserPage interface. When exploited, it enables execution of arbitrary JavaScript in victims' browsers, potentially stealing session cookies or performing actions on behalf of authenticated users. Organizations using JFinalOA versions before 2025.01.01 are affected.
💻 Affected Systems
- JFinalOA
📦 What is this software?
Jfinaloa by Jfinaloa Project
⚠️ Risk & Real-World Impact
Worst Case
Attackers steal administrator session cookies, gain full system access, and compromise sensitive organizational data or deploy ransomware.
Likely Case
Attackers steal user session cookies to impersonate legitimate users, access unauthorized data, or perform limited malicious actions within the application.
If Mitigated
With proper input validation and output encoding, the attack fails to execute, resulting in no impact beyond failed exploitation attempts.
🎯 Exploit Status
XSS vulnerabilities are commonly weaponized. The referenced issue shows proof-of-concept details. Exploitation requires user interaction with crafted links.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2025.01.01
Vendor Advisory: https://gitee.com/r1bbit/JFinalOA/issues/IBHUQ9
Restart Required: Yes
Instructions:
1. Download JFinalOA version 2025.01.01 or later from official sources. 2. Backup current installation and data. 3. Replace existing files with patched version. 4. Restart the application server. 5. Verify functionality.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side input validation to sanitize the orgid parameter
Implement input validation in the controller handling openSelectManyUserPage to strip or escape HTML/JavaScript characters
Web Application Firewall (WAF)
allDeploy WAF rules to block XSS payloads targeting the vulnerable endpoint
Configure WAF to inspect and block requests containing script tags or JavaScript in orgid parameter
🧯 If You Can't Patch
- Implement Content Security Policy (CSP) headers to restrict script execution
- Disable or restrict access to the openSelectManyUserPage interface if not required
🔍 How to Verify
Check if Vulnerable:
Test by injecting a simple XSS payload like <script>alert('test')</script> into the orgid parameter of openSelectManyUserPage endpointCheck Version:
Check application version in admin interface or configuration filesVerify Fix Applied:
After patching, attempt the same XSS payload and verify it's properly sanitized or blocked📡 Detection & Monitoring
Log Indicators:
- HTTP requests to openSelectManyUserPage containing script tags or JavaScript in parameters
- Unusual parameter values in orgid field
Network Indicators:
- HTTP requests with encoded script payloads in query parameters
- Multiple requests to same endpoint with varying payloads
SIEM Query:
source="web_server" AND uri="*openSelectManyUserPage*" AND (param="*<script>*" OR param="*javascript:*" OR param="*onerror=*" OR param="*onload=*")