Fix: LDAP metadata collection err

[RamanaReddy0M]

• closes: Ldap Module CollectMetadata() - not working. #5446

Test

Local setup

docker-compose.yaml

version: '3.8'

networks:
  openldap-network:
    driver: bridge
services:
  openldap:
    image: bitnami/openldap:latest
    ports:
      - '1389:1389'
      - '1636:1636'
    environment:
      - LDAP_ADMIN_USERNAME=admin
      - LDAP_ADMIN_PASSWORD=adminpassword
      - LDAP_USERS=user01,user02
      - LDAP_PASSWORDS=password1,password2
    networks:
      - openldap-network
    volumes:
      - 'openldap_data:/bitnami/openldap'

volumes:
  openldap_data:
    driver: local

$ docker compose up -d 

Template

id: ldap-default-creds

info:
  name: LDAP Default Credential - Bruteforce
  author: pussycat0x
  severity: info
  description: |
    Attempts to guess username/password combinations over LDAP.
  metadata:
    shodan-query: ldap
  tags: js,network,ldap,enum

javascript:
  - code: |
      const ldap = require('nuclei/ldap');
      const cfg = new ldap.Config();
      cfg.Upgrade = true;
      const client = ldap.Client(Url, Realm, cfg);
      const metadata = client.CollectMetadata();
      log(to_json(metadata))

    args:
      Host: "ldap://{{Host}}"
      Port: 1389
      Url: "ldap://{{Host}}:{{Port}}"
      Realm: "example.org"

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

✗./nuclei -t test.yaml -u localhost -debug

                     __     _
   ____  __  _______/ /__  (_)
  / __ \/ / / / ___/ / _ \/ /
 / / / / /_/ / /__/ /  __/ /
/_/ /_/\__,_/\___/_/\___/_/   v3.3.4

                projectdiscovery.io

[INF] Current nuclei version: v3.3.4 (latest)
[INF] Current nuclei-templates version: v10.0.1 (latest)
[WRN] Scan results upload to cloud is disabled.
[INF] New templates added in latest release: 86
[INF] Templates loaded for current scan: 1
[WRN] Loading 1 unsigned templates for scan. Use with caution.
[INF] Targets loaded for current scan: 1
[JS] {
  "BaseDN": "dc=example,dc=org",
  "Domain": "example.org",
  "DefaultNamingContext": "",
  "DomainFunctionality": "",
  "ForestFunctionality": "",
  "DomainControllerFunctionality": "",
  "DnsHostName": ""
}
[DBG] [ldap-default-creds] Dumped Javascript request for localhost:1389:
Variables:
        1. Host => ldap://localhost
        2. Port => 1389
        3. Realm => example.org
        4. Url => ldap://localhost:1389 address=localhost:1389
[DBG]  [ldap-default-creds] Javascript Code:

        const ldap = require('nuclei/ldap');
        const cfg = new ldap.Config();
        cfg.Upgrade = true;
        const client = ldap.Client(Url, Realm, cfg);
        const metadata = client.CollectMetadata();
        log(to_json(metadata))

[DBG] [ldap-default-creds] Dumped Javascript response for localhost:1389:
        1. response => {   "BaseDN": "dc=example .... "",   "DnsHostName": "" }
        2. success => true address=localhost:1389
[ldap-default-creds:dsl-1] [javascript] [info] localhost:1389

Checklist

• Pull request is created against the dev branch
• All checks passed (lint, unit/integration/regression tests etc.) with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)