CVE-2023-52043
📋 TL;DR
This vulnerability in D-Link COVR mesh Wi-Fi systems truncates WPA-PSK passwords, allowing attackers to bypass authentication and gain unauthorized network access. Attackers within wireless range can exploit weak password validation to join the network. Affects D-Link COVR 1100, 1102, and 1103 AC1200 hardware revision B1 devices.
💻 Affected Systems
- D-Link COVR 1100
- D-Link COVR 1102
- D-Link COVR 1103
⚠️ 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
Complete network compromise with attacker gaining persistent access to internal network resources, intercepting traffic, and launching further attacks against connected devices.
Likely Case
Unauthorized network access allowing traffic monitoring, bandwidth consumption, and potential access to unsecured internal services.
If Mitigated
Limited impact if strong network segmentation, encrypted internal communications, and additional authentication layers are in place.
🎯 Exploit Status
Exploitation requires physical proximity to wireless network. Public proof-of-concept demonstrates password truncation attack.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Check D-Link support for firmware updates. Consider hardware replacement if no fix is provided.
🔧 Temporary Workarounds
Change to WPA3 or WPA2 Enterprise
allSwitch to WPA3-SAE or WPA2-Enterprise authentication which are not affected by this PSK truncation vulnerability
Use very short passwords
allSet WPA-PSK passwords to 7 characters or less to avoid truncation vulnerability (though this weakens security)
🧯 If You Can't Patch
- Replace affected hardware with non-vulnerable models or different vendor equipment
- Implement network segmentation with VLANs to isolate vulnerable devices and limit attack surface
🔍 How to Verify
Check if Vulnerable:
Check device hardware label for 'Rev B1' and model number COVR-1100, COVR-1102, or COVR-1103. Test by setting a long WPA-PSK password and attempting to connect with truncated version.Check Version:
Check web interface at http://[router-ip]/ or physical label on deviceVerify Fix Applied:
No fix available to verify. If firmware update becomes available, verify password truncation no longer occurs.📡 Detection & Monitoring
Log Indicators:
- Multiple failed authentication attempts followed by successful connection
- Unusual MAC addresses connecting to network
Network Indicators:
- Unexpected devices on network
- Unusual traffic patterns from new devices
SIEM Query:
Wireless authentication logs showing successful connections after multiple failures, or new device MAC addresses not in approved list