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Reolink E1 Zoom Camera <= 3.0.0.716 Unauthenticated Private Key Disclosure

Jun 1, 2022 · By Julien Ahrens

ADVISORY INFORMATION

  • Product: Reolink E1 Zoom Camera
  • Vendor URL: https://reolink.com/product/e1-zoom
  • Type: Exposure of Sensitive Information to an Unauthorized Actor [CWE-200]
  • Date found: 2021-08-26
  • Date published: 2022-06-01
  • CVSSv3 Score: 7.5 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
  • CVE: CVE-2021-40149

CREDITS

This vulnerability was discovered and researched by Julien Ahrens from RCE Security.

VERSIONS AFFECTED

Reolink E1 Zoom Camera 3.0.0.716 (latest) and below

INTRODUCTION

Meet new generation of Reolink E1 series. Advanced features - 5MP Super HD & optical zoom are added into this compact camera. Plus two-way audio, remote live view and more smart capacities help you connect with what you care. Be closer to families and be away from worries.

(from the vendor’s homepage)

VULNERABILITY DETAILS

The web server of the E1 Zoom camera through 3.0.0.716 discloses its SSL private key via the root web server directory.

An unauthenticated attacker can abuse this with network-level access to the camera to download the webserver’s private SSL key by simply going to the following URL:

http://[CAM-IP]/self.key

RISK

An unauthenticated attacker can download the webserver’s SSL private key and thereby attack the encrypted network traffic to and from the camera, which might lead to the disclosure of the administrative access credentials and other sensitive information.

SOLUTION

None.

REPORT TIMELINE

  • 2021-08-26: Discovery of the vulnerability
  • 2021-08-26: Sent notification to Reolink via their support channel
  • 2021-08-26: Response from vendor asking for vulnerability details
  • 2021-08-26: Sent all the vulnerability details
  • 2021-08-31: Vendor is still looking into the issue
  • 2021-09-03: Vendor states that the issue will be fixed by the end of September.
  • 2021-10-01: Since no firmware has been released, we’ve sent another notification
  • 2021-10-02: Vendor states that the new firmware is delayed
  • 2022-02-01: Since there is still fix, sent another notification
  • 2022-02-02: Vendor states that the firmware with the fix hasn’t been released yet.
  • 2022-03-03: Since there is still fix, sent another notification
  • 2022-03-12: Vendor states they’re still working on the issue (internal update awaits testing)
  • 2022-05-24: Since there is still fix, sent another notification
  • 2022-05-24: Vendor states that the update still hasn’t been released yet.
  • 2022-06-01: Almost a year should be enough to fix this. Public disclosure.

REFERENCES

None