CVE-2025-67485
📋 TL;DR
CVE-2025-67485 is a security bypass vulnerability in mad-proxy that allows attackers to circumvent HTTP/HTTPS traffic interception rules, potentially exposing sensitive web traffic to unauthorized access. This affects organizations using mad-proxy versions 0.3 and below for web security monitoring and filtering.
💻 Affected Systems
- mad-proxy
⚠️ 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 completely bypass all security policies, intercepting and potentially modifying sensitive communications including authentication credentials, financial data, and proprietary information.
Likely Case
Partial bypass of security rules allowing some malicious traffic to pass undetected, compromising the integrity of the security monitoring system.
If Mitigated
Limited exposure due to network segmentation and additional security controls, but the proxy's primary security function remains compromised.
🎯 Exploit Status
The advisory suggests the bypass technique is straightforward but specific details are not publicly disclosed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: None
Vendor Advisory: https://github.com/machphy/mad-proxy/security/advisories/GHSA-wx63-35hw-2482
Restart Required: Yes
Instructions:
No official patch available. Monitor the GitHub advisory for updates and apply any future patches immediately.
🔧 Temporary Workarounds
Disable mad-proxy
linuxTemporarily disable mad-proxy service until a fix is available
sudo systemctl stop mad-proxy
sudo systemctl disable mad-proxy
Network isolation
allIsolate mad-proxy instances from sensitive network segments
🧯 If You Can't Patch
- Replace mad-proxy with alternative proxy solutions that are actively maintained and patched
- Implement additional network monitoring and intrusion detection systems to compensate for the bypass vulnerability
🔍 How to Verify
Check if Vulnerable:
Check mad-proxy version: python -c "import mad_proxy; print(mad_proxy.__version__)" or review installation logsCheck Version:
python -c "import mad_proxy; print(mad_proxy.__version__)"Verify Fix Applied:
No verification possible until patch is released. After future patch, verify version is above 0.3📡 Detection & Monitoring
Log Indicators:
- Unexpected traffic patterns bypassing proxy rules
- Security policy violations not being logged
Network Indicators:
- Direct client-server connections bypassing proxy
- Unusual traffic volumes to/from proxy server
SIEM Query:
source="mad-proxy" AND (event_type="bypass" OR rule_violation="none")