CVE-2025-12365
📋 TL;DR
This vulnerability involves error messages being exposed in HTTP headers, potentially leaking sensitive information about the system. It affects BLU-IC2 and BLU-IC4 devices up to version 1.19.5. Attackers could use this information to gather intelligence for further attacks.
💻 Affected Systems
- BLU-IC2
- BLU-IC4
📦 What is this software?
Blu Ic2 Firmware by Azure Access
Blu Ic4 Firmware by Azure Access
⚠️ Risk & Real-World Impact
Worst Case
Information disclosure leads to system fingerprinting, configuration details exposure, and potential credential leakage enabling follow-on attacks.
Likely Case
Attackers gather system information to plan targeted attacks or identify vulnerable components.
If Mitigated
Limited information exposure with no direct system compromise.
🎯 Exploit Status
Exploitation requires sending malformed requests to trigger error conditions.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after 1.19.5
Vendor Advisory: https://azure-access.com/security-advisories
Restart Required: No
Instructions:
1. Check current version using version command. 2. Download updated firmware from vendor portal. 3. Apply firmware update following vendor documentation. 4. Verify update completed successfully.
🔧 Temporary Workarounds
Configure HTTP error suppression
allModify HTTP server configuration to suppress detailed error messages in headers
configure http error-messages suppress
Implement reverse proxy filtering
allDeploy reverse proxy to strip sensitive headers before reaching clients
🧯 If You Can't Patch
- Implement network segmentation to restrict access to affected devices
- Deploy web application firewall to filter and sanitize HTTP headers
🔍 How to Verify
Check if Vulnerable:
Send malformed HTTP requests to device and inspect response headers for detailed error informationCheck Version:
show versionVerify Fix Applied:
Test with same malformed requests and confirm error details are no longer exposed in headers📡 Detection & Monitoring
Log Indicators:
- Unusual HTTP error patterns
- Multiple failed request attempts
Network Indicators:
- HTTP responses containing detailed error information in headers
- Repeated malformed request patterns
SIEM Query:
source="web_server" AND (header="*error*" OR header="*exception*")