Individual skill

exploiting-sudo-suid-and-cron-misconfigurations

Local privilege escalation through sudo rule abuse (GTFOBins, SETENV/LD_PRELOAD/BASH_ENV/PYTHONPATH), SUID/SGID binaries, writable cron jobs and cron PATH hijacking, and wildcard (glob) argument injection against privileged tar/rsync/zip/chown/tcpdump invocations during authorized engagements.

internal/tools/skills/data/linux-hardening/exploiting-sudo-suid-and-cron-misconfigurations/SKILL.md

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Network or broad shell
Last checked
Nov 7, 2026

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1,310
Repository last updated
Nov 7, 2026
License
Apache-2.0

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# Exploiting Sudo, SUID, and Cron Misconfigurations

## When to Use

- During authorized local privilege escalation after obtaining an unprivileged shell
- When `sudo -l` reveals NOPASSWD entries, SETENV, or preserved environment variables
- When SUID/SGID binaries or root-owned writable scripts are present
- When cron/systemd timers run scripts on writable paths or with an unsafe PATH
- When a privileged script processes a wildcard (`*`) over an attacker-writable directory

## Critical: Techniques Most Often Missed

Testers run `sudo -l`, see a binary they don't recognize, and stop. The escalation usually hides in environment handling, relative paths, and wildcard argument injection.