CVE-2023-27126:TP-Link TAPO C200 camera V3 (EU) reuses the same AES Key-IV pair across all cameras, allowing attackers with physical access to extract WiFi passwords and TP-Link account credentials.

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The TP-Link TAPO C200 camera V3 (EU) running firmware version 1.1.22 Build 220725 has a critical security vulnerability (CWE-522: Insufficiently Protected Credentials) where the same AES Key-IV pair is reused across all camera units. This cryptographic implementation flaw enables attackers who gain physical access to any camera to extract and decrypt sensitive information stored on the device, including the victim's WiFi network password and TP-Link account credentials. This vulnerability poses a significant risk as it could lead to unauthorized network access and account compromise.

Overview

The vulnerability in TP-Link TAPO C200 camera V3 (EU) stems from poor cryptographic implementation, specifically the reuse of the same AES Key-IV pair across all camera units. In secure cryptographic implementations, initialization vectors (IVs) should be unique for each encryption operation, even when using the same key. By reusing both the key and IV across all devices, TP-Link has created a situation where an attacker who understands the encryption scheme can easily decrypt sensitive data from any camera in this product line. The issue affects firmware version 1.1.22 Build 220725 and potentially other versions. Once an attacker has physical access to a camera, they can extract encrypted data and use the known Key-IV pair to decrypt WiFi passwords and TP-Link account credentials, potentially compromising both the local network and the user's TP-Link cloud account.

Remediation

Users of the affected TP-Link TAPO C200 camera V3 (EU) should take the following actions:

  1. Update to the latest firmware version if TP-Link has released a patch addressing this vulnerability.
  2. If no patch is available, consider using these cameras only on isolated networks without sensitive data.
  3. Change your TP-Link account password and enable two-factor authentication if available.
  4. Consider implementing network segmentation to isolate IoT devices from your main network.
  5. Ensure physical security of the cameras to prevent unauthorized access.
  6. Monitor for unusual network activity that might indicate compromise.
  7. Contact TP-Link support for additional guidance and to inquire about security updates addressing this issue.

References

  1. Detailed analysis of the vulnerability: https://www.claranet.fr/blog/dans-les-entrailles-dune-camera-connectee-tp-link-14
  2. TP-Link product information: http://tp-link.com
  3. TAPO product line information: http://tapo.com
  4. CWE-522: Insufficiently Protected Credentials: https://cwe.mitre.org/data/definitions/522.html

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

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