Broadcast DB2 Discover

ID: db2-discover

Severity: info

Author: pussycat0x

Tags: ibm,network,js,udp

Description

Attempts to discover DB2 servers on the network by sending a broadcast request to port 523/udp.

YAML Source

id: db2-discover

info:
  name: Broadcast DB2 Discover
  author: pussycat0x
  severity: info
  description: |
    Attempts to discover DB2 servers on the network by sending a broadcast request to port 523/udp.
  reference:
    - https://nmap.org/nsedoc/scripts/broadcast-db2-discover.html
  metadata:
    shodan-query: port:523
    verified: true
    max-request: 1
  tags: ibm,network,js,udp

javascript:
  - pre-condition: |
      isUDPPortOpen(Host,Port);
    code: |
      let packet = bytes.NewBuffer();
      const c = require("nuclei/net");
      const cmd = "DB2GETADDR\0SQL09010\0"
      packet.WriteString(cmd)
      let conn = c.Open('udp', `${Host}:${Port}`);
      conn.SendHex(packet.Hex());
      const result = conn.RecvString()
      const cleanedString = result.replace(/\x00/g, '');
      let combinedResult;

      if (cleanedString.includes("DB2RETADDRSQL")) {

      const regex = /^DB2RETADDRSQL(\d{2})(\d{2})(\d{1})(.*)$/;
      const matches = cleanedString.match(regex);

      const formattedNumber = matches ? `${matches[1]}.${matches[2]}.${matches[3]}` : '';
      const hostname = matches ? matches[4] : '';

      combinedResult = `Db2 Version: ${formattedNumber}, Hostname: ${hostname}`;

      } else {
      conn.Close();
      }
      combinedResult;

    args:
      Host: "{{Host}}"
      Port: 523

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

    extractors:
      - type: dsl
        dsl:
          - response
# digest: 4b0a00483046022100c21ddb09a63ac9fa6adaab1898f5255bda82c3870232db954703ed3df5b3bb32022100ec1db4da730f4314a6b1abc20fc3765c6cf8092093f63fa1bed367bfb03286fe:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

$ nuclei -u "URL" -t "javascript/udp/detection/db2-discover.yaml"

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