eol-openssh-debian: EOL Debian OpenSSH - Detect

id: eol-openssh-debian

info:
  name: EOL Debian OpenSSH - Detect
  author: matejsmycka
  severity: medium
  description: |
    Detected OpenSSH server banners that indicated End-of-Life (EOL) Debian releases (sarge, etch, lenny, squeeze, wheezy, jessie, stretch, buster). EOL systems no longer received official security updates.
  reference:
    - https://endoflife.date/debian
  metadata:
    verified: true
    shodan-query: port:22 "Debian"
    max-request: 1
    vendor: debian
    product: debian
  tags: js,ssh,enum,debian,eol,network,misconfig,vuln

javascript:
  - pre-condition: |
      isPortOpen(Host,Port);

    code: |
      let m = require("nuclei/ssh");
      let c = m.SSHClient();
      let res = c.ConnectSSHInfoMode(Host, Port);
      let raw = res.ServerID.Raw;

      // EOL Debian version patterns
      const eolPatterns = [
        /(squeeze|woody|sarge|etch|deb10|deb9|deb8|deb7)/
      ];

      let hasEOL = eolPatterns.some(pattern => pattern.test(raw));
      if (hasEOL) {
        Export(raw);
      }

    args:
      Host: "{{Host}}"
      Port: 22

    matchers:
      - type: dsl
        dsl:
          - "success == true"

    extractors:
      - type: dsl
        dsl:
          - response
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