Ruby - Privilege Escalation

ID: privesc-ruby

Severity: high

Author: daffainfo

Tags: code,linux,ruby,privesc,local

Description

Ruby is a dynamic, open-source programming language known for its simplicity and productivity. It is often used for web development, scripting, and software development. Ruby’s elegant syntax and focus on developer happiness have made it a popular choice for building web applications and other software projects.

YAML Source

id: privesc-ruby

info:
  name: Ruby - Privilege Escalation
  author: daffainfo
  severity: high
  description: |
    Ruby is a dynamic, open-source programming language known for its simplicity and productivity. It is often used for web development, scripting, and software development. Ruby's elegant syntax and focus on developer happiness have made it a popular choice for building web applications and other software projects.
  reference:
    - https://gtfobins.github.io/gtfobins/ruby/
  metadata:
    verified: true
    max-request: 4
  tags: code,linux,ruby,privesc,local

self-contained: true
code:
  - engine:
      - sh
      - bash
    source: |
      whoami

  - engine:
      - sh
      - bash
    source: |
      ruby -e 'exec "whoami"'

  - engine:
      - sh
      - bash
    source: |
      sudo ruby -e 'exec "whoami"'

  - engine:
      - sh
      - bash
    source: |
      ruby -e 'Process::Sys.setuid(0); exec "whoami"'

    matchers-condition: and
    matchers:
      - type: word
        part: code_1_response
        words:
          - "root"
        negative: true

      - type: dsl
        dsl:
          - 'contains(code_2_response, "root")'
          - 'contains(code_3_response, "root")'
          - 'contains(code_4_response, "root")'
        condition: or
# digest: 4b0a00483046022100b9f79d11ae5568d5ecb0c7adee8e6de79c466c14939822f8da6e6f746ed0e7b80221008eb6f82031339d0ea5eb0a0dc45769a03565f68da6d4dd8b95dd47573453e8a8:922c64590222798bb761d5b6d8e72950

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 "code/privilege-escalation/linux/binary/privesc-ruby.yaml"

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