gawk - Privilege Escalation

ID: privesc-gawk

Severity: high

Author: daffainfo

Tags: code,linux,gawk,privesc,local

Description

gawk is the GNU implementation of the AWK programming language. It is a powerful text processing tool that allows for pattern scanning and processing of text files. gawk is commonly used for data extraction, reporting, and manipulation tasks in shell scripts and command-line environments.

YAML Source

id: privesc-gawk

info:
  name: gawk - Privilege Escalation
  author: daffainfo
  severity: high
  description: |
    gawk is the GNU implementation of the AWK programming language. It is a powerful text processing tool that allows for pattern scanning and processing of text files. gawk is commonly used for data extraction, reporting, and manipulation tasks in shell scripts and command-line environments.
  reference:
    - https://gtfobins.github.io/gtfobins/gawk/
  metadata:
    verified: true
    max-request: 3
  tags: code,linux,gawk,privesc,local

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

  - engine:
      - sh
      - bash
    source: |
      gawk 'BEGIN {system("whoami")}'

  - engine:
      - sh
      - bash
    source: |
      sudo gawk 'BEGIN {system("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: 4a0a0047304502206b9e8fcc119a7ffc6dde1bc0be376e9ed77b45753332eaeabbc0c4a1cdf23f11022100babde41ad35d643b740249fcdb659919c266c55726566d53376eaeb98a2bf6a2:922c64590222798bb761d5b6d8e72950

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-gawk.yaml"

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