The stdbuf command is used to modify the buffering operations of another command. It can be used to adjust the input/output buffering of a command, which can be useful for controlling the flow of data and improving the performance of certain operations.
PoC代码[已公开]
id: privesc-stdbuf
info:
name: stdbuf - Privilege Escalation
author: daffainfo
severity: high
description: |
The stdbuf command is used to modify the buffering operations of another command. It can be used to adjust the input/output buffering of a command, which can be useful for controlling the flow of data and improving the performance of certain operations.
reference:
- https://gtfobins.github.io/gtfobins/stdbuf/
metadata:
verified: true
max-request: 3
tags: code,linux,stdbuf,privesc,local
self-contained: true
code:
- engine:
- sh
- bash
source: |
whoami
- engine:
- sh
- bash
source: |
stdbuf -i0 whoami
- engine:
- sh
- bash
source: |
sudo stdbuf -i0 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
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