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Nuclei Templates

Fastjson Version Detection

ID: fastjson-version

Severity: info

Author: yuansec

Tags: fastjson,tech

Description

Section titled “Description”

If the server returns an exception to the client,The fastjson version will be retrieved,Fastjson versions greater than 1.2.41,Contains the latest version(1.2.76).

YAML Source

Section titled “YAML Source”
id: fastjson-version


info:
  name: Fastjson Version Detection
  author: yuansec
  severity: info
  description: If the server returns an exception to the client,The fastjson version will be retrieved,Fastjson versions greater than 1.2.41,Contains the latest version(1.2.76).
  reference:
    - https://blog.csdn.net/caiqiiqi/article/details/107907489
  metadata:
    max-request: 1
  tags: fastjson,tech


http:
  - raw:
      - |
        POST / HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json


        {"@type":"java.lang.AutoCloseable"


    matchers:
      - type: word
        words:
          - 'fastjson-version'


    extractors:
      - type: regex
        part: body
        group: 1
        regex:
          - 'fastjson-version.*([0-9]\.[0-9]+\.[0-9]+)'
# digest: 490a0046304402204df02b64c801bbc5fc6857e7a37f0a56dc08cad7d6678678c8eb154404b9299d02203b24c0926be03b7f78e951d1669159321cb42bc8526839a5daafa46026d99007:922c64590222798bb761d5b6d8e72950

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 "http/technologies/fastjson-version.yaml"

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