# CIS Ubuntu 14.04 LTS - 6.1.10 Ensure no world writable files exist > Find and remediate world writable files across all local filesystems - Skill: `cyberstrikeus/cis-ubuntu-14-04-lts-6-1-10-ensure-no-world-writable-files-e` (Agent Skill) - Install (CLI): `npx skillmds@latest add cyberstrikeus/cis-ubuntu-14-04-lts-6-1-10-ensure-no-world-writable-files-e` - Raw SKILL.md: https://api.skillmd.com/api/skills/cyberstrikeus/cis-ubuntu-14-04-lts-6-1-10-ensure-no-world-writable-files-e/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-ubuntu-14-04-lts-6-1-10-ensure-no-world-writable-files-e --- # 6.1.10 Ensure no world writable files exist (Scored) ## Profile Applicability - Level 1 - Server - Level 1 - Workstation ## Description Unix-based systems support variable settings to control access to files. World writable files are the least secure. See the `chmod(2)` man page for more information. ## Rationale Data in world-writable files can be modified and compromised by any user on the system. World writable files may also indicate an incorrectly written script or program that could potentially be the cause of a larger compromise to the system's integrity. ## Audit Procedure Run the following command and verify no files are returned: ```bash df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -type f -perm -0002 ``` The command above only searches local filesystems, there may still be compromised items on network mounted partitions. Additionally the `--local` option to `df` is not universal to all versions, it can be omitted to search all filesystems on a system including network mounted filesystems or the following command can be run manually for each partition: ```bash find -xdev -type f -perm -0002 ``` ## Expected Result No output should be returned. ## Remediation Removing write access for the "other" category (`chmod o-w `) is advisable, but always consult relevant vendor documentation to avoid breaking any application dependencies on a given file. ## Default Value Not applicable. ## References None ## CIS Controls 14 Controlled Access Based on the Need to Know - Controlled Access Based on the Need to Know ## Profile - Level 1