CVE-2021-40419:Firmware update vulnerability in Reolink RLC-410W v3.0.0.136_20121102 allows arbitrary firmware updates via crafted network requests.

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Description Preview

A security vulnerability has been identified in the 'factory' binary of Reolink RLC-410W camera running firmware version 3.0.0.136_20121102. This vulnerability allows an attacker to perform unauthorized firmware updates by sending specially-crafted network requests to the device. By exploiting this vulnerability, an attacker could potentially install malicious firmware, leading to complete device compromise, unauthorized access to video feeds, or use the device as an entry point to the broader network.

Overview

The vulnerability exists in the firmware update mechanism of the Reolink RLC-410W security camera (version 3.0.0.136_20121102). The 'factory' binary, which is responsible for handling firmware updates, does not properly validate update requests. This allows an attacker to bypass authentication controls and initiate unauthorized firmware updates by sending a specific sequence of network requests to the device. Successful exploitation could result in device compromise, allowing attackers to gain persistent access, modify device functionality, intercept video feeds, or pivot to other network devices.

Remediation

  1. Update to the latest firmware version provided by Reolink that addresses this vulnerability.
  2. If updates are not available, implement network segmentation to isolate security cameras from the internet and restrict access to trusted devices only.
  3. Use strong, unique passwords for all camera accounts.
  4. Implement a firewall to filter traffic to and from the cameras, allowing only necessary connections.
  5. Regularly monitor camera access logs for suspicious activities.
  6. Consider placing cameras behind a VPN if remote access is required.

References

  1. Cisco Talos Intelligence Vulnerability Report: https://talosintelligence.com/vulnerability_reports/TALOS-2021-1428
  2. CVE-2021-40419 in the National Vulnerability Database
  3. Reolink Support Portal for firmware updates: https://reolink.com/support/

Industry ExposureMost to least
This section illustrates the prevalence of a specific Common Vulnerabilities and Exposures (CVE) across various industries based on customer reports. The ranking displays industries from the most to least affected by this particular vulnerability, offering valuable insight into where this CVE has been most frequently observed. This information can help organizations within these sectors prioritize their security efforts, understand their relative risk exposure compared to their peers, and focus remediation strategies where they are most needed. By understanding the industry-specific impact, organizations can make more informed decisions regarding patching, resource allocation, and overall risk management related to this CVE.

  1. Accommodation & Food Services: Low
    Accommodation & Food Services
  2. Administrative, Support, Waste Management & Remediation Services: Low
    Administrative, Support, Waste Management & Remediation Services
  3. Agriculture, Forestry Fishing & Hunting: Low
    Agriculture, Forestry Fishing & Hunting
  4. Arts, Entertainment & Recreation: Low
    Arts, Entertainment & Recreation
  5. Construction: Low
    Construction
  6. Educational Services: Low
    Educational Services
  7. Finance and Insurance: Low
    Finance and Insurance
  8. Health Care & Social Assistance: Low
    Health Care & Social Assistance
  9. Information: Low
    Information
  10. Management of Companies & Enterprises: Low
    Management of Companies & Enterprises
  11. Manufacturing: Low
    Manufacturing
  12. Mining: Low
    Mining
  13. Other Services (except Public Administration): Low
    Other Services (except Public Administration)
  14. Professional, Scientific, & Technical Services: Low
    Professional, Scientific, & Technical Services
  15. Public Administration: Low
    Public Administration
  16. Real Estate Rental & Leasing: Low
    Real Estate Rental & Leasing
  17. Retail Trade: Low
    Retail Trade
  18. Transportation & Warehousing: Low
    Transportation & Warehousing
  19. Utilities: Low
    Utilities
  20. Wholesale Trade: Low
    Wholesale Trade

Focus on What Matters

  1. See Everything.
  2. Identify True Risk.
  3. Proactively Mitigate Threats.

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