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CIS Debian Linux 13 v1.0.0 L1 Server

Audit Details

Name: CIS Debian Linux 13 v1.0.0 L1 Server

Updated: 7/23/2026

Authority: CIS

Plugin: Unix

Revision: 1.3

Estimated Item Count: 263

File Details

Filename: CIS_Debian_Linux_13_v1.0.0_L1_Server.audit

Size: 1.33 MB

MD5: 48ab4ecf2293498c0fdf8fec1e487904
SHA256: a9bb41f4c59fd24909ae3bc2e1f2b213103896e71d9067f8a1a3bbc9ca35d33b

Audit Changelog

 
Revision 1.3

Jul 23, 2026

Functional Update
  • 5.2.7 Ensure access to the su command is restricted
Miscellaneous
  • Variables updated.
Revision 1.2

Jul 2, 2026

Functional Update
  • 1.5.12 Ensure systemd-coredump ProcessSizeMax is configured
  • 1.5.13 Ensure systemd-coredump Storage is configured
  • 5.3.3.3.3 Ensure pam_pwhistory includes use_authtok
Informational Update
  • 1.1.1.1 Ensure cramfs kernel module is not available
  • 1.1.1.10 Ensure usb-storage kernel module is not available
  • 1.1.1.11 Ensure unused filesystems kernel modules are not available
  • 1.1.1.2 Ensure freevxfs kernel module is not available
  • 1.1.1.3 Ensure hfs kernel module is not available
  • 1.1.1.4 Ensure hfsplus kernel module is not available
  • 1.1.1.5 Ensure jffs2 kernel module is not available
  • 1.1.1.9 Ensure firewire-core kernel module is not available
  • 1.2.1.1 Ensure the source.list and .source files use the Signed-By option
  • 1.2.1.3 Ensure access to gpg key files are configured
  • 1.2.2.1 Ensure updates, patches, and additional security software are installed
  • 1.3.1.4 Ensure apparmor_restrict_unprivileged_unconfined is enabled
  • 1.4.1 Ensure bootloader password is set
  • 1.5.1 Ensure fs.protected_hardlinks is configured
  • 1.5.10 Ensure kernel.yama.ptrace_scope is configured
  • 1.5.11 Ensure core file size is configured
  • 1.5.12 Ensure systemd-coredump ProcessSizeMax is configured
  • 1.5.13 Ensure systemd-coredump Storage is configured
  • 1.5.3 Ensure kernel.yama.ptrace_scope is configured
  • 1.5.4 Ensure fs.suid_dumpable is configured
  • 1.5.5 Ensure kernel.dmesg_restrict is configured
  • 1.5.8 Ensure kernel.kptr_restrict is configured
  • 1.5.9 Ensure kernel.randomize_va_space is configured
  • 1.6.1 Ensure /etc/motd is configured
  • 1.6.2 Ensure /etc/issue is configured
  • 1.6.3 Ensure /etc/issue.net is configured
  • 1.7.2 Ensure GDM login banner is configured
  • 1.7.3 Ensure GDM disable-user-list option is enabled
  • 1.7.4 Ensure GDM screen locks when the user is idle
  • 1.7.5 Ensure GDM screen locks cannot be overridden
  • 1.7.6 Ensure GDM automatic mounting of removable media is disabled
  • 1.7.7 Ensure GDM disabling automatic mounting of removable media is not overridden
  • 1.7.8 Ensure GDM autorun-never is enabled
  • 1.7.9 Ensure GDM autorun-never is not overridden
  • 2.1.15 Ensure snmp services are not in use
  • 2.3.2.1 Ensure systemd-timesyncd configured with authorized timeserver
  • 2.3.3.1 Ensure chrony is configured with authorized timeserver
  • 2.4.1.1 Ensure cron daemon is enabled and active
  • 2.4.1.9 Ensure access to crontab is configured
  • 2.4.2.1 Ensure access to at is configured
  • 3.2.1 Ensure atm kernel module is not available
  • 3.2.2 Ensure can kernel module is not available
  • 3.2.3 Ensure dccp kernel module is not available
  • 3.2.4 Ensure rds kernel module is not available
  • 3.2.5 Ensure sctp kernel module is not available
  • 3.2.6 Ensure tipc kernel module is not available
  • 3.3.1.10 Ensure net.ipv4.conf.all.secure_redirects is configured
  • 3.3.1.11 Ensure net.ipv4.conf.default.secure_redirects is configured
  • 3.3.1.12 Ensure net.ipv4.conf.all.rp_filter is configured
  • 3.3.1.13 Ensure net.ipv4.conf.default.rp_filter is configured
  • 3.3.1.14 Ensure net.ipv4.conf.all.accept_source_route is configured
  • 3.3.1.15 Ensure net.ipv4.conf.default.accept_source_route is configured
  • 3.3.1.16 Ensure net.ipv4.conf.all.log_martians is configured
  • 3.3.1.17 Ensure net.ipv4.conf.default.log_martians is configured
  • 3.3.1.18 Ensure net.ipv4.tcp_syncookies is configured
  • 3.3.1.2 Ensure net.ipv4.conf.all.forwarding is configured
  • 3.3.1.3 Ensure net.ipv4.conf.default.forwarding is configured
  • 3.3.1.4 Ensure net.ipv4.conf.all.send_redirects is configured
  • 3.3.1.5 Ensure net.ipv4.conf.default.send_redirects is configured
  • 3.3.1.6 Ensure net.ipv4.icmp_ignore_bogus_error_responses is configured
  • 3.3.1.7 Ensure net.ipv4.icmp_echo_ignore_broadcasts is configured
  • 3.3.1.8 Ensure net.ipv4.conf.all.accept_redirects is configured
  • 3.3.1.9 Ensure net.ipv4.conf.default.accept_redirects is configured
  • 3.3.2.1 Ensure net.ipv6.conf.all.forwarding is configured
  • 3.3.2.2 Ensure net.ipv6.conf.default.forwarding is configured
  • 3.3.2.3 Ensure net.ipv6.conf.all.accept_redirects is configured
  • 3.3.2.4 Ensure net.ipv6.conf.default.accept_redirects is configured
  • 3.3.2.5 Ensure net.ipv6.conf.all.accept_source_route is configured
  • 3.3.2.6 Ensure net.ipv6.conf.default.accept_source_route is configured
  • 3.3.2.7 Ensure net.ipv6.conf.all.accept_ra is configured
  • 3.3.2.8 Ensure net.ipv6.conf.default.accept_ra is configured
  • 4.1.3 Ensure ufw incoming default is configured
  • 5.1.1 Ensure access to /etc/ssh/sshd_config is configured
  • 5.1.10 Ensure sshd HostbasedAuthentication is disabled
  • 5.1.11 Ensure sshd IgnoreRhosts is enabled
  • 5.1.12 Ensure sshd KexAlgorithms is configured
  • 5.1.14 Ensure sshd LoginGraceTime is configured
  • 5.1.15 Ensure sshd LogLevel is configured
  • 5.1.16 Ensure sshd MACs are configured
  • 5.1.17 Ensure sshd MaxAuthTries is configured
  • 5.1.18 Ensure sshd MaxSessions is configured
  • 5.1.19 Ensure sshd MaxStartups is configured
  • 5.1.2 Ensure access to SSH private host key files is configured
  • 5.1.20 Ensure sshd PermitEmptyPasswords is disabled
  • 5.1.21 Ensure sshd PermitRootLogin is disabled
  • 5.1.22 Ensure sshd PermitUserEnvironment is disabled
  • 5.1.23 Ensure sshd UsePAM is enabled
  • 5.1.3 Ensure access to SSH public host key files is configured
  • 5.1.4 Ensure sshd access is configured
  • 5.1.5 Ensure sshd Banner is configured
  • 5.1.6 Ensure sshd Ciphers are configured
  • 5.1.7 Ensure sshd ClientAliveInterval and ClientAliveCountMax are configured
  • 5.2.1 Ensure sudo is installed
  • 5.2.3 Ensure sudo log file exists
  • 5.3.2.2 Ensure pam_faillock module is enabled
  • 5.3.2.3 Ensure pam_pwquality module is enabled
  • 5.3.2.4 Ensure pam_pwhistory module is enabled
  • 5.3.3.1.1 Ensure password failed attempts lockout is configured
  • 5.3.3.1.2 Ensure password unlock time is configured
  • 5.3.3.2.1 Ensure password number of changed characters is configured
  • 5.3.3.2.2 Ensure password length is configured
  • 5.3.3.2.3 Ensure password complexity is configured
  • 5.3.3.2.4 Ensure password same consecutive characters is configured
  • 5.3.3.2.5 Ensure password maximum sequential characters is configured
  • 5.3.3.2.8 Ensure password quality is enforced for the root user
  • 5.3.3.3.1 Ensure password history remember is configured
  • 5.3.3.3.2 Ensure password history is enforced for the root user
  • 5.3.3.3.3 Ensure pam_pwhistory includes use_authtok
  • 5.3.3.4.3 Ensure pam_unix includes a strong password hashing algorithm
  • 5.3.3.4.4 Ensure pam_unix includes use_authtok
  • 5.4.1.1 Ensure password expiration is configured
  • 5.4.1.3 Ensure password expiration warning days is configured
  • 5.4.1.5 Ensure inactive password lock is configured
  • 5.4.2.1 Ensure root is the only UID 0 account
  • 5.4.2.6 Ensure root user umask is configured
  • 5.4.2.7 Ensure system accounts do not have a valid login shell
  • 5.4.2.8 Ensure accounts without a valid login shell are locked
  • 5.4.3.2 Ensure default user shell timeout is configured
  • 5.4.3.3 Ensure default user umask is configured
  • 6.1.1.1.4 Ensure journald ForwardToSyslog is disabled
  • 6.1.1.1.5 Ensure journald Storage is configured
  • 6.1.1.1.6 Ensure journald Compress is configured
  • 6.1.1.2.2 Ensure systemd-journal-upload authentication is configured
  • 6.1.2.3 Ensure journald is configured to send logs to rsyslog
  • 6.1.2.6 Ensure rsyslog is configured to send logs to a remote log host
  • 6.1.2.7 Ensure rsyslog is not configured to receive logs from a remote client
  • 6.1.3.1 Ensure access to all logfiles has been configured
  • 7.1.10 Ensure access to /etc/security/opasswd is configured
  • 7.1.11 Ensure world writable files and directories are secured
  • 7.1.12 Ensure no files or directories without an owner and a group exist
  • 7.2.10 Ensure local interactive user dot files access is configured
  • 7.2.7 Ensure no duplicate user names exist
  • 7.2.9 Ensure local interactive user home directories are configured
Miscellaneous
  • Platform check updated.
  • References updated.
Added
  • CIS_Debian_Linux_13_v1.0.0_L1_Server.audit from CIS Debian Linux 13 v1.0.0
Removed
  • CIS_Debian_Linux_13_v1.0.0_L1_Server.audit from CIS Debian Linux 13 1.0.0
Revision 1.1

May 4, 2026

Miscellaneous
  • Platform check updated.
Added
  • CIS_Debian_Linux_13_v1.0.0_L1_Server.audit from CIS Debian Linux 13 1.0.0
Removed
  • CIS_Debian_Linux_13_v1.0.0_L1_Server.audit from CIS Debian Linux 13 v1.0.0