Security Audit Report: User/Group/Permission Configuration Review

[eydcheecker-boop]

Summary

I performed a security audit of the Nextcloud Docker Container
focusing on Linux User, Group, Permission, and Principle of Least
Privilege implementation.

Audit Scope

• File ownership analysis
• Permission verification
• Process privilege review
• Security best practices validation

Findings

✅ PASSED - No critical vulnerabilities found

Positive Findings:

1. File Ownership: All files owned by www-data (UID 33) ✅
2. Permission: rwx r-x r-x (Others cannot write) ✅
3. Process Segmentation: Main=root, Workers=www-data ✅
4. PoLP: Properly implemented ✅
5. No Privilege Escalation: No sudoers or capabilities ✅

Methodology

• User verification: whoami, id, groups,
• Permission analysis: ls -ln, find -perm
• Process audit: ps aux | grep
• Vulnerability scanning: getcap, sudo -l

Conclusion

Container follows security best practices and is production-ready.

Reference

• Audit Date: 15 January 2026
• Container: nextcloud:latest
• Audit Type: Security posture assessment