# Cis Ubuntu1204 V110 2 17

> Set Sticky Bit on All World-Writable Directories

- Skill: `cyberstrikeus/cis-ubuntu1204-v110-2-17` (Agent Skill)
- Install (CLI): `npx skillmds@latest add cyberstrikeus/cis-ubuntu1204-v110-2-17`
- Raw SKILL.md: https://api.skillmd.com/api/skills/cyberstrikeus/cis-ubuntu1204-v110-2-17/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: cyberstrikeus (https://skillmd.com/u/cyberstrikeus)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/cyberstrikeus/cis-ubuntu1204-v110-2-17

---


# 2.17 Set Sticky Bit on All World-Writable Directories (Scored)

## Profile Applicability

- Level 1

## Description

Setting the sticky bit on world writable directories prevents users from deleting or renaming files in that directory that are not owned by them.

## Rationale

This feature prevents the ability to delete or rename files in world writable directories (such as `/tmp`) that are owned by another user.

## Audit Procedure

### Using Command Line

```bash
df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -type d \( -perm -0002 -a ! -perm -1000 \) 2>/dev/null
```

## Expected Result

No output should be returned. If any directories are listed, the sticky bit is not set on them.

## Remediation

### Using Command Line

```bash
df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -type d -perm -0002 2>/dev/null | xargs chmod a+t
```

## Default Value

By default, the sticky bit is set on `/tmp` but may not be set on other world-writable directories.

## References

- CIS Ubuntu 12.04 LTS Server Benchmark v1.1.0

## Profile

Level 1 - Scored