Nice - Privilege Escalation

ID: privesc-nice

Severity: high

Author: daffainfo

Tags: code,linux,nice,privesc,local

Description

In Unix-like operating systems, the nice command is used to execute a program with a modified scheduling priority. It allows users to start a process with a specified priority level, which can influence the allocation of CPU resources. This can be useful for managing system resources and controlling the impact of a process on system performance.

YAML Source

id: privesc-nice

info:
  name: Nice - Privilege Escalation
  author: daffainfo
  severity: high
  description: |
    In Unix-like operating systems, the nice command is used to execute a program with a modified scheduling priority. It allows users to start a process with a specified priority level, which can influence the allocation of CPU resources. This can be useful for managing system resources and controlling the impact of a process on system performance.
  reference:
    - https://gtfobins.github.io/gtfobins/nice/
  metadata:
    verified: true
    max-request: 3
  tags: code,linux,nice,privesc,local

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

  - engine:
      - sh
      - bash
    source: |
      nice whoami

  - engine:
      - sh
      - bash
    source: |
      sudo nice 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: 4b0a00483046022100d0b325de2c76d16b5c3097eca32a28f5b5056267a3e48c8e0689d07dcd4c5ee9022100ac3fd1a6f22bc6dc1eefcca2cb9791eec87c4222451f9f434c4ba5e144db4a77:922c64590222798bb761d5b6d8e72950

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-nice.yaml"

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