CVE-2022-22885
📋 TL;DR
CVE-2022-22885 is a critical vulnerability in Hutool v5.7.18 where the HttpRequest component disables TLS/SSL certificate validation, allowing man-in-the-middle attacks. This affects any application using Hutool's HTTP client to make secure connections, potentially exposing sensitive data. Users of Hutool in affected versions are at risk if they rely on HTTPS for secure communication.
💻 Affected Systems
- Hutool
📦 What is this software?
Hutool by Hutool
⚠️ Risk & Real-World Impact
Worst Case
Attackers intercept and decrypt HTTPS traffic, steal credentials, session tokens, or sensitive data, leading to full system compromise or data breaches.
Likely Case
Man-in-the-middle attacks in untrusted networks (e.g., public Wi-Fi) result in data interception and tampering of HTTP requests/responses.
If Mitigated
With proper network segmentation and certificate pinning, impact is reduced to limited internal exposure or denial of service.
🎯 Exploit Status
Exploitation requires network access to intercept traffic; tools like mitmproxy can be used easily.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v5.7.19 or later
Vendor Advisory: https://github.com/dromara/hutool/issues/2042
Restart Required: No
Instructions:
1. Update Hutool dependency to v5.7.19 or higher in your project's build file (e.g., pom.xml for Maven). 2. Rebuild and redeploy the application. 3. Test HTTPS connections to ensure certificate validation is enforced.
🔧 Temporary Workarounds
Enable SSL Certificate Validation Manually
allOverride default SSL settings in Hutool's HttpRequest to enforce certificate validation.
HttpRequest.setSSLProtocol("TLS") and configure a custom SSL socket factory with validation enabled.
🧯 If You Can't Patch
- Implement network-level controls such as VPNs or TLS inspection to encrypt and validate traffic externally.
- Use alternative HTTP clients with proper SSL validation and replace Hutool calls in critical code paths.
🔍 How to Verify
Check if Vulnerable:
Check if Hutool version is 5.7.18 by inspecting project dependencies or running a version check command.Check Version:
For Java projects: mvn dependency:tree | grep hutool, or check the pom.xml file.Verify Fix Applied:
After updating, test HTTPS requests to a known endpoint and verify that invalid certificates are rejected.📡 Detection & Monitoring
Log Indicators:
- Logs showing HTTPS connections to untrusted certificates without errors or warnings.
Network Indicators:
- Unusual outbound HTTPS traffic patterns or connections to IPs with mismatched certificates.
SIEM Query:
Example: search for HTTP client errors related to SSL handshake failures or successful connections to domains with invalid certs.