CVE-2024-30129
📋 TL;DR
CVE-2024-30129 is an HTTP host header manipulation vulnerability in HCL software that allows attackers to redirect requests to different domains/IP addresses by modifying the Host header. This affects applications that improperly validate or trust the Host header value. Organizations using vulnerable HCL software versions are impacted.
💻 Affected Systems
- HCL software products (specific products not detailed in reference)
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attackers could redirect sensitive requests to malicious servers, leading to credential theft, session hijacking, or data exfiltration through server-side request forgery (SSRF) scenarios.
Likely Case
Attackers redirect users to phishing sites or manipulate application behavior to bypass security controls, potentially leading to information disclosure or authentication bypass.
If Mitigated
With proper input validation and Host header verification, the vulnerability would be blocked at the web server or application layer before processing.
🎯 Exploit Status
Exploitation requires sending crafted HTTP requests with modified Host headers, which is straightforward with tools like curl or Burp Suite.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to HCL advisory KB0117533 for specific fixed versions
Vendor Advisory: https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0117533
Restart Required: Yes
Instructions:
1. Review HCL advisory KB0117533. 2. Identify affected products and versions. 3. Apply the recommended patch or upgrade to fixed versions. 4. Restart the application/services as required.
🔧 Temporary Workarounds
Web Server Host Header Validation
allConfigure web servers (e.g., Apache, Nginx) to validate or restrict Host header values to prevent manipulation.
# Apache example: SetEnvIf Host "^example\.com$" valid_host
# Nginx example: if ($host !~ ^(example\.com|localhost)$) { return 444; }
Application-Level Host Validation
allImplement middleware or code to verify Host header matches expected domains before processing requests.
# Example pseudocode: if request.headers['Host'] not in allowed_hosts: return 400
🧯 If You Can't Patch
- Implement network-level controls such as WAF rules to block malicious Host header manipulations.
- Use reverse proxies to sanitize and validate Host headers before they reach the vulnerable application.
🔍 How to Verify
Check if Vulnerable:
Send HTTP requests with modified Host headers to the application and observe if requests are processed or redirected unexpectedly. Use tools like curl: curl -H "Host: malicious.com" http://target-application/Check Version:
Check application version via administrative interface or consult vendor documentation for version query commands.Verify Fix Applied:
After patching, repeat the test with modified Host headers; requests should be rejected or handled securely without redirection to unauthorized domains.📡 Detection & Monitoring
Log Indicators:
- Unusual Host header values in HTTP logs
- Requests with Host headers pointing to non-standard domains
Network Indicators:
- HTTP traffic with spoofed Host headers
- Unexpected outbound connections triggered by Host header manipulation
SIEM Query:
source="web_logs" | search "Host: *" | where Host NOT IN ("expected-domain.com", "localhost")