CVE-2022-34538 – This CVE describes a command injection vulnerab... (How to Fix)

📋 TL;DR

This CVE describes a command injection vulnerability in Digital Watchdog DW MEGApix IP cameras that allows attackers to execute arbitrary commands on affected devices. The vulnerability exists in the /admin/vca/bia/addacph.cgi component and can be exploited via crafted POST requests. Organizations using these cameras with vulnerable firmware are affected.

💻 Affected Systems

Products:

Digital Watchdog DW MEGApix IP cameras

Versions: A7.2.2_20211029 and likely earlier versions

Operating Systems: Embedded Linux-based camera firmware

Default Config Vulnerable: ⚠️ Yes

Notes: Requires access to the web interface, but authentication status is unclear from available information.

📦 What is this software?

Megapix Firmware by Dw

View all CVEs affecting Megapix Firmware →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete device compromise leading to camera control, network pivoting, data exfiltration, and persistent backdoor installation.

🟠

Likely Case

Camera takeover enabling video stream interception, device configuration modification, and use as network foothold.

🟢

If Mitigated

Limited impact if cameras are isolated in separate VLANs with strict network segmentation and access controls.

🌐 Internet-Facing: HIGH - IP cameras are often exposed to the internet for remote access, making them prime targets.

🏢 Internal Only: MEDIUM - Still significant risk if attackers gain internal network access through other means.

🎯 Exploit Status

Public PoC: ⚠️ Yes

Weaponized: LIKELY

Unauthenticated Exploit: ✅ No

Complexity: LOW

Exploit requires sending crafted POST requests to the vulnerable endpoint. The GitHub gist contains technical details.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Unknown

Vendor Advisory: Not found in provided references

Restart Required: No

Instructions:

1. Contact Digital Watchdog for updated firmware
2. Check vendor website for security advisories
3. Apply firmware updates when available

🔧 Temporary Workarounds

Network Segmentation

all

Isolate cameras in separate VLAN with strict firewall rules

Access Control

all

Restrict web interface access to trusted IP addresses only

🧯 If You Can't Patch

Disable remote web interface access entirely
Implement network-based intrusion detection for suspicious POST requests to /admin/vca/bia/addacph.cgi

🔍 How to Verify

Check if Vulnerable:

Check camera firmware version via web interface or SSH if enabled. Version A7.2.2_20211029 is confirmed vulnerable.

Check Version:

Check web interface System Information page or contact vendor for version checking methods

Verify Fix Applied:

Verify firmware version has been updated beyond A7.2.2_20211029

📡 Detection & Monitoring

Log Indicators:

Unusual POST requests to /admin/vca/bia/addacph.cgi
Suspicious command execution in system logs

Network Indicators:

POST requests to vulnerable endpoint with command injection payloads
Outbound connections from cameras to unexpected destinations

SIEM Query:

source="camera_logs" AND uri="/admin/vca/bia/addacph.cgi" AND method="POST"

📊 Metadata

CVE ID: CVE-2022-34538

CVSS v3 Score: 8.8 (HIGH)

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE: CWE-78

Published: July 19, 2022

Last Updated: November 21, 2024

🔗 References

https://gist.github.com/secgrant/820faeeaa0cb4889edaa1d6fef83deab Third Party Advisory
https://gist.github.com/secgrant/820faeeaa0cb4889edaa1d6fef83deab Third Party Advisory

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🔗 Related Vulnerabilities

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