CVE-2024-39208
📋 TL;DR
CVE-2024-39208 is a critical vulnerability in luci-app-lucky v2.8.3 that contains hardcoded credentials, allowing attackers to bypass authentication and gain unauthorized access. This affects all systems running the vulnerable version of this OpenWrt/LEDE web interface application. Attackers can potentially take full control of affected devices.
💻 Affected Systems
- luci-app-lucky
⚠️ 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 system compromise allowing attackers to execute arbitrary commands, install malware, pivot to other network devices, and maintain persistent access to the entire network infrastructure.
Likely Case
Unauthorized administrative access to the luci-app-lucky interface, enabling configuration changes, service disruption, and potential credential harvesting from the device.
If Mitigated
Limited impact if network segmentation prevents external access and strong authentication controls are in place for internal access.
🎯 Exploit Status
Exploitation is trivial - attackers simply need to use the hardcoded credentials documented in the references. No special tools or skills required.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v2.8.4 or later
Vendor Advisory: https://github.com/yanggao017/vuln/blob/main/luci-app-lucky.md
Restart Required: Yes
Instructions:
1. Update luci-app-lucky to v2.8.4 or later via package manager. 2. Restart the luci service or reboot the device. 3. Change any passwords that may have been compromised.
🔧 Temporary Workarounds
Disable luci-app-lucky service
linuxTemporarily disable the vulnerable application until patching can be completed
/etc/init.d/luci-app-lucky stop
/etc/init.d/luci-app-lucky disable
Network access control
linuxRestrict network access to luci-app-lucky interface using firewall rules
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP
🧯 If You Can't Patch
- Immediately change all system passwords and SSH keys on affected devices
- Implement strict network segmentation to isolate affected devices from critical infrastructure
🔍 How to Verify
Check if Vulnerable:
Check luci-app-lucky version: opkg list-installed | grep luci-app-lucky. If version is 2.8.3, the system is vulnerable.Check Version:
opkg list-installed | grep luci-app-luckyVerify Fix Applied:
Verify updated version: opkg list-installed | grep luci-app-lucky should show version 2.8.4 or later. Test authentication with previously known hardcoded credentials should fail.📡 Detection & Monitoring
Log Indicators:
- Multiple failed login attempts followed by successful authentication
- Authentication from unexpected IP addresses
- Configuration changes without authorized user activity
Network Indicators:
- HTTP/HTTPS requests to luci-app-lucky interface from suspicious sources
- Unusual outbound connections from affected devices
SIEM Query:
source="luci.log" AND ("authentication success" OR "login successful") AND NOT user="authorized_user"