CVE-2024-29292
📋 TL;DR
This CVE describes multiple OS command injection vulnerabilities in Kasda LinkSmart Router KW6512 firmware. Authenticated remote attackers can execute arbitrary operating system commands through various CGI parameters, potentially gaining full control of affected routers. Users with Kasda KW6512 routers running firmware version 1.3 or earlier are affected.
💻 Affected Systems
- Kasda LinkSmart Router KW6512
⚠️ 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 router compromise allowing attacker to intercept all network traffic, install persistent backdoors, pivot to internal networks, and use router as botnet node.
Likely Case
Router takeover leading to credential theft, DNS hijacking, network surveillance, and potential lateral movement to connected devices.
If Mitigated
Limited impact if strong authentication, network segmentation, and proper access controls prevent attacker from reaching vulnerable endpoints.
🎯 Exploit Status
Exploit details available in public GitHub gist. Requires authentication but default credentials may be used.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor for latest firmware
Vendor Advisory: https://www.kasdanet.com/ENHCSZ/pro_view-120.html
Restart Required: Yes
Instructions:
1. Log into router admin interface. 2. Navigate to firmware update section. 3. Download latest firmware from Kasda website. 4. Upload and apply firmware update. 5. Reboot router.
🔧 Temporary Workarounds
Disable remote administration
allPrevent external access to router web interface
Change default credentials
allUse strong, unique passwords for router admin account
🧯 If You Can't Patch
- Isolate router on separate VLAN with strict firewall rules
- Implement network monitoring for suspicious CGI parameter requests
🔍 How to Verify
Check if Vulnerable:
Check firmware version in router admin interface under System Status or About pageCheck Version:
Check via web interface or SSH if enabled: cat /etc/versionVerify Fix Applied:
Confirm firmware version is newer than v1.3 after update📡 Detection & Monitoring
Log Indicators:
- Unusual CGI parameter values in web logs
- Multiple failed authentication attempts followed by successful login
Network Indicators:
- Unusual outbound connections from router
- DNS queries to suspicious domains
SIEM Query:
source="router_logs" AND (uri="*.cgi" AND param="*;*" OR param="*|*" OR param="*`*" OR param="*$(*" OR param="*&*" OR param="*%0a*" OR param="*%0d*")