CVE-2021-43283
📋 TL;DR
This CVE describes a command injection vulnerability in Victure WR1200 routers that allows authenticated attackers to execute arbitrary shell commands with root privileges via the ping and traceroute web interface features. This enables complete device compromise including opening reverse shells. All users of Victure WR1200 routers through version 1.0.3 are affected.
💻 Affected Systems
- Victure WR1200 WiFi Router
📦 What is this software?
Wr1200 Firmware by Govicture
⚠️ Risk & Real-World Impact
Worst Case
Complete device takeover with root access, allowing attacker to intercept all network traffic, install persistent malware, pivot to internal networks, and use device as botnet node.
Likely Case
Attacker with valid credentials gains full control of router, enabling network monitoring, credential theft, and lateral movement to connected devices.
If Mitigated
With proper network segmentation and access controls, impact limited to isolated network segment, though router still compromised.
🎯 Exploit Status
Exploitation requires authentication but is straightforward once credentials are obtained. Technical details and proof-of-concept are publicly available in NCC Group advisory.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: No vendor advisory found in provided references
Restart Required: No
Instructions:
No official patch available. Check vendor website for firmware updates beyond version 1.0.3.
🔧 Temporary Workarounds
Disable web interface access
allDisable remote access to router web interface and restrict to local network only
Change default credentials
allEnsure strong, unique credentials are set for router administration
🧯 If You Can't Patch
- Segment router on isolated network segment to limit lateral movement
- Implement network monitoring for suspicious outbound connections from router
🔍 How to Verify
Check if Vulnerable:
Check router firmware version via web interface at 192.168.1.1 or similar default IP. If version is 1.0.3 or earlier, device is vulnerable.Check Version:
Login to router web interface and check firmware version in System Status or similar section.Verify Fix Applied:
Check if firmware version is later than 1.0.3. No official fix available, so verification requires testing command injection in ping/traceroute features.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in router logs
- Multiple failed login attempts followed by ping/traceroute commands
- Suspicious outbound connections from router
Network Indicators:
- Reverse shell connections originating from router IP
- Unusual ICMP or traceroute traffic patterns
- Router making unexpected external connections
SIEM Query:
source="router_logs" AND (command="ping" OR command="traceroute") AND command CONTAINS special characters🔗 References
- https://research.nccgroup.com/2021/11/12/technical-advisory-multiple-vulnerabilities-in-victure-wr1200-wifi-router-cve-2021-43282-cve-2021-43283-cve-2021-43284/
- https://www.nccgroup.trust/us/our-research/?research=Technical+advisories
- https://research.nccgroup.com/2021/11/12/technical-advisory-multiple-vulnerabilities-in-victure-wr1200-wifi-router-cve-2021-43282-cve-2021-43283-cve-2021-43284/
- https://www.nccgroup.trust/us/our-research/?research=Technical+advisories
