CVE-2017-7462 – CVE-2017-7462 is a critical backdoor vulnerabil... (How to Fix)

📋 TL;DR

CVE-2017-7462 is a critical backdoor vulnerability in Intellinet NFC-30ir IP cameras that allows remote attackers to execute arbitrary commands via a vendor-supplied CGI script. This affects all users of the vulnerable camera model who haven't applied mitigations. Attackers can gain complete control of the device without authentication.

💻 Affected Systems

Products:

Intellinet NFC-30ir IP Camera

Versions: All firmware versions prior to any vendor patch

Operating Systems: Embedded Linux-based firmware

Default Config Vulnerable: ⚠️ Yes

Notes: The backdoor CGI script is present in the web directory by default in all vulnerable versions.

📦 What is this software?

Nfc 30ir Firmware by Intellinet Network

View all CVEs affecting Nfc 30ir Firmware →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete device takeover leading to camera manipulation, network pivoting, data exfiltration, or participation in botnets.

🟠

Likely Case

Unauthorized camera access, video stream interception, device configuration changes, and potential lateral movement within the network.

🟢

If Mitigated

Limited impact if device is isolated in a restricted network segment with strict firewall rules.

🌐 Internet-Facing: HIGH - Directly accessible devices can be exploited by any internet-based attacker.

🏢 Internal Only: HIGH - Even internally, any compromised host on the network could exploit this vulnerability.

🎯 Exploit Status

Public PoC: ⚠️ Yes

Weaponized: CONFIRMED

Unauthenticated Exploit: ⚠️ Yes

Complexity: LOW

Exploit code is publicly available and requires minimal technical skill to execute.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Unknown - No official patch identified

Vendor Advisory: No vendor advisory found

Restart Required: No

Instructions:

1. Check vendor website for firmware updates
2. If available, download latest firmware
3. Upload via camera web interface
4. Verify successful update

🔧 Temporary Workarounds

Network Segmentation

all

Isolate camera on separate VLAN with strict firewall rules

Access Control

linux

Block access to camera web interface from untrusted networks

iptables -A INPUT -s 0.0.0.0/0 -p tcp --dport 80 -j DROP
iptables -A INPUT -s 0.0.0.0/0 -p tcp --dport 443 -j DROP

🧯 If You Can't Patch

Replace affected cameras with secure alternatives
Implement network monitoring for suspicious access to camera CGI endpoints

🔍 How to Verify

Check if Vulnerable:

Attempt to access /cgi-bin/iptest.cgi on camera web interface. If accessible, device is vulnerable.

Check Version:

Check firmware version via camera web interface or manufacturer documentation

Verify Fix Applied:

Verify /cgi-bin/iptest.cgi returns 404 or access denied after remediation

📡 Detection & Monitoring

Log Indicators:

Access to /cgi-bin/iptest.cgi in web logs
Unusual command execution patterns

Network Indicators:

HTTP requests to camera CGI endpoints from unexpected sources
Unusual outbound traffic from camera

SIEM Query:

source="camera_web_logs" AND uri="/cgi-bin/iptest.cgi"

📊 Metadata

CVE ID: CVE-2017-7462

CVSS v3 Score: 9.8 (CRITICAL)

CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE: CWE-22

Published: April 11, 2017

Last Updated: April 20, 2025

🔗 References

https://www.exploit-db.com/exploits/41829/ Exploit,Third Party Advisory,VDB Entry
https://www.exploit-db.com/exploits/41829/ Exploit,Third Party Advisory,VDB Entry

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🔗 Related Vulnerabilities

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