CVE-2020-11920
📋 TL;DR
This CVE describes a command injection vulnerability in the Svakom Siime Eye device's web interface. Attackers can inject shell commands via the NFS settings menu to execute arbitrary code with root privileges. All users of affected devices are vulnerable.
💻 Affected Systems
- Svakom Siime Eye
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing remote code execution as root, enabling data theft, device takeover, and potential lateral movement in networks.
Likely Case
Remote attackers gaining full control of the device, accessing camera feeds, and using it as a foothold for further attacks.
If Mitigated
Limited impact if device is isolated from internet and untrusted networks, though local network attacks remain possible.
🎯 Exploit Status
Exploitation requires access to the web interface but no authentication. Shell metacharacter injection in NFS settings field.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None found in provided references
Restart Required: No
Instructions:
No official patch available. Check vendor website for firmware updates.
🔧 Temporary Workarounds
Network Isolation
allIsolate device from internet and untrusted networks
Disable Web Interface
linuxDisable the vulnerable web server if possible
🧯 If You Can't Patch
- Disconnect device from networks entirely
- Replace with a different, secure device
🔍 How to Verify
Check if Vulnerable:
Check device firmware version matches affected version. Attempt to access web interface NFS settings.Check Version:
Check device web interface or documentation for firmware versionVerify Fix Applied:
Verify firmware has been updated to a version not listed as vulnerable.📡 Detection & Monitoring
Log Indicators:
- Unusual shell commands in system logs
- Web requests with shell metacharacters to NFS settings endpoint
Network Indicators:
- Unexpected outbound connections from device
- Suspicious traffic to/from device web port
SIEM Query:
web.url:*nfs* AND (web.query:*;* OR web.query:*|* OR web.query:*`* OR web.query:*$(*)