env - Privilege Escalation

ID: privesc-env

Severity: high

Author: daffainfo

Tags: code,linux,env,privesc,local

Description

In Linux, the env command is used to display or modify the environment variables for a command. It can be used to set environment variables for a specific command or to print the current environment variables.

YAML Source

id: privesc-env

info:
  name: env - Privilege Escalation
  author: daffainfo
  severity: high
  description: |
    In Linux, the env command is used to display or modify the environment variables for a command. It can be used to set environment variables for a specific command or to print the current environment variables.
  reference:
    - https://gtfobins.github.io/gtfobins/env/
  metadata:
    verified: true
    max-request: 3
  tags: code,linux,env,privesc,local

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

  - engine:
      - sh
      - bash
    source: |
      expect -c 'spawn whoami;interact'

  - engine:
      - sh
      - bash
    source: |
      sudo expect -c 'spawn whoami;interact'

    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: 4a0a0047304502206d1cdcc0363b8a0ae09b4c8700fe32428347e021f647cc2265d38ccfd18a8c5b022100ce43bffa746fcee42e11f4eb7f751e43184859dd3fd1e102e7779bef9a6fae4c: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-env.yaml"

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