Other Articles
- Servers – Configure /tmp Partition
- Servers – Configure /home Partition
- Servers – Configure /var Partition
- Servers – Configure Shm Partition
- Servers – Enable dm-verity
- Servers – Enforce Authentication for Single User Mode
- Servers – Restrict Core Dump Generation
- Servers – Enable NX Protection
- Servers – Enable Address Space Layout Randomization (ASLR)
- Servers – Configure Message of the Day (MOTD)
- Servers – Configure Local Login Banner
- Servers – Configure Remote Login Banner
- Servers – Configure Message of the Day (MOTD) Permissions
- Servers – Configure Issue Permissions
- Servers – Configure Password Permissions
- Servers – Configure Group Backup Permissions
- Servers – Configure Group Permissions
- Servers – Configure Gshadow Backup Permissions
- Servers – Configure Gshadow Permissions
- Servers – Configure Passwd Backup Permissions
- Servers – Configure Shadow Backup Permissions
- Servers – Configure Shadow Permissions
- Servers – Ensure All Users' Home Directories Exist
- Servers – Ensure No Users Have .forward Files
- Servers – Ensure No Users Have .netrc Files
- Servers – Ensure No Users Have .rhosts Files
- Servers – Ensure Root is the Only UID 0 Account
- Servers – Ensure Root PATH Integrity
- Servers – Remove Legacy '+' Entries from Group
- Servers – Remove Legacy '+' Entries from Passwd
- Servers – Remove Legacy '+' Entries from Shadow
- Servers – Restrict Access to .netrc Files
- Servers – Secure System Accounts
- Servers – Ensure Users' Home Directory Permissions are 750 or More Restrictive
- Servers – Ensure Users Own Their Home Directories
- Servers – Verify Security Of Dot Files
- Servers – Verify Existence of passwd Groups
- Servers – Ensure No Duplicate UIDs Exist
- Servers – Ensure No Duplicate GIDs Exist
- Servers – Ensure No Duplicate User Names Exist
- Servers – Ensure No Duplicate Group Names Exist
- Servers – Ensure Shadow Group Has No Members
- Servers – Ensure Logging is Configured
- Servers – Ensure Journald Compression is Configured
- Servers – Ensure Journald Storage is Configured to Persistent Disk
- Servers – Ensure Permissions on All Logfiles are Configured
- Servers – Verify Time Synchronization with Chrony
- Servers – Ensure Chrony is Configured
- Servers – Ensure X Window System is Not Installed
- Servers – Ensure NFS and RPC Services are Disabled
- Servers – Ensure Rsync Service is Disabled
- Servers – Ensure TCP SYN Cookies is Enabled
- Servers – Ensure IPv6 Default Deny Firewall Policy
- Servers – Ensure IPv6 Loopback Traffic is Configured
- Servers – Ensure IPv6 Outbound and Established Connections are Configured
- Servers – Verify IPv6 Open Ports Rules
- Servers – Ensure Default Deny Firewall Policy is Configured
- Servers – Ensure Loopback Traffic is Configured
- Servers – Ensure Outbound and Established Connections are Configured
- Servers – Ensure Iptables is Installed
- Servers – Ensure Packet Redirect Sending is Disabled
- Servers – Ensure Source Routed Packets are Not Accepted
- Servers – Ensure ICMP Redirects are Not Accepted
- Servers – Ensure Secure ICMP Redirects are Disabled
- Servers – Ensure Suspicious Packets Logging is Enabled
- Servers – Ensure Broadcast ICMP Requests are Ignored
- Servers – Ensure Bogus ICMP Responses are Ignored
- Servers – Ensure Reverse Path Filtering is Enabled
- Servers – Ensure Absence of IPv6 Router Advertisements
- Servers – Ensure SSH SSHD Config Permissions Are Configured
- Servers – Ensure SSH Private Host Key Permissions
- Servers – Ensure SSH Public Host Key Permissions Are Configured
- Servers – Ensure SSH Protocol is Set to 2
- Servers – Ensure SSH LogLevel is Appropriate
- Servers – Ensure SSH X11 Forwarding is Disabled
- Servers – Ensure SSH MaxAuthTries is Set to 4 or Less
- Servers – Ensure SSH IgnoreRhosts is Enabled
- Servers – Ensure SSH HostbasedAuthentication is Disabled
- Servers – Disable SSH Root Login
- Servers – Ensure SSH PermitEmptyPasswords is Disabled
- Servers – Verify SSH Strong Ciphers Strength
- Servers – Verify SSH Strong MAC Algorithms
- Servers – Verify SSH Strong Key Exchange Algorithms
- Servers – Ensure SSH Idle Timeout Interval is Configured
- Servers – Ensure SSH Login Grace Time is Configured
- Servers – Configure SSH Warning Banner
- Servers – Enable SSH PAM Authentication
- Servers – Disable SSH AllowTcpForwarding
- Servers – Configure SSH MaxStartups
- Servers – Verify SSH MaxSessions Configuration
- Servers – Ensure Password Creation Requirements are Configured
- Servers – Ensure Password Reuse is Limited
- Servers – Ensure Password Hashing Algorithm is SHA-512
- Servers – Ensure Password Expiration Days is 365 or Less
- Servers – Ensure Minimum Days Between Password Changes is 7 or More
- Servers – Ensure Password Expiration Warning Days is 7 or More
- Servers – Ensure Inactive Password Lock is 30 Days or Less
- Servers – Ensure All Users Last Password Change Date is in the Past
- Servers – Ensure System Accounts Are Secured
- Servers – Ensure Default Group for Root Account is GID 0
- Servers – Verify Default User Umask
- Servers – Ensure Default User Shell Timeout is 900 Seconds or Less
- Servers – Ensure Root Login is Restricted to System Console
- Servers – Ensure Access to su Command is Restricted
Servers – Disable UDF Filesystem
Support > Fixing Checks > Server
02 March, 2026
This check ensures that the UDF (Universal Disk Format) filesystem is disabled on servers. The UDF filesystem type is used to implement ISO/IEC 13346 and ECMA-167 specifications.
Check Details
- Resource: Server
- Check: Ensure UDF filesystem is disabled
- Risk: If the UDF filesystem is enabled, attackers may exploit removable media or malicious disk images to introduce unauthorized software or gain access to sensitive data.
Remediation Steps
- Open a terminal session on the target server with root or sudo privileges.
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Create or edit the configuration file to disable the UDF filesystem module:
sudo nano /etc/modprobe.d/udf.conf
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Add the following line to disable the UDF filesystem module:
install udf /bin/true
- Save (Ctrl+O) the file and exit (Ctrl+X) the editor.
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If the UDF module is currently loaded, unload it using the following command:
sudo rmmod udf