CVE-2024-57436
📋 TL;DR
CVE-2024-57436 is a session ID exposure vulnerability in RuoYi v4.8.0 that allows unauthorized attackers to view admin session IDs through system monitoring. This enables session hijacking where attackers can impersonate admin users by crafting cookies with stolen session IDs. Organizations using RuoYi v4.8.0 are affected.
💻 Affected Systems
- RuoYi
📦 What is this software?
Ruoyi by Ruoyi
⚠️ Risk & Real-World Impact
Worst Case
Complete administrative takeover of the RuoYi system, allowing attackers to modify configurations, access sensitive data, deploy backdoors, and potentially pivot to other systems.
Likely Case
Unauthorized administrative access leading to data theft, configuration changes, and privilege escalation within the RuoYi application.
If Mitigated
Limited impact with proper network segmentation, strong authentication, and session management controls in place.
🎯 Exploit Status
Exploitation requires accessing the system monitoring endpoint to retrieve session IDs, then crafting cookies. Public proof-of-concept exists in GitHub repositories.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v4.8.1 or later
Vendor Advisory: https://ruoyi.vip/
Restart Required: Yes
Instructions:
1. Backup current RuoYi installation. 2. Download latest version from official repository. 3. Replace affected files with patched version. 4. Restart application server. 5. Verify session IDs are no longer exposed in monitoring.
🔧 Temporary Workarounds
Disable System Monitoring Endpoint
allTemporarily disable or restrict access to the system monitoring functionality that exposes session IDs.
Modify application configuration to disable /monitor endpoints
Add access controls to restrict /monitor/* paths
Implement Session Validation
allAdd additional session validation checks to prevent cookie-based session hijacking.
Implement IP binding for sessions
Add user-agent validation
Enable session timeout and rotation
🧯 If You Can't Patch
- Implement network segmentation to isolate RuoYi from critical systems
- Deploy WAF with session protection rules to detect and block session hijacking attempts
🔍 How to Verify
Check if Vulnerable:
Access the system monitoring endpoint (typically /monitor/server) as an unauthenticated user and check if session IDs are visible in the response.Check Version:
Check RuoYi version in application properties or admin interfaceVerify Fix Applied:
After patching, attempt to access the same monitoring endpoint and verify session IDs are no longer exposed in responses.📡 Detection & Monitoring
Log Indicators:
- Multiple failed authentication attempts followed by successful admin login from new IP
- Unusual access patterns to /monitor endpoints
- Admin sessions from unexpected IP addresses or user agents
Network Indicators:
- Unusual traffic to system monitoring endpoints from unauthorized sources
- Cookie manipulation attempts in HTTP headers
SIEM Query:
source="ruoyi" AND (uri_path="/monitor/*" OR cookie="JSESSIONID=*") | stats count by src_ip