[ Lynis 3.0.3 ] ################################################################################ Lynis comes with ABSOLUTELY NO WARRANTY. This is free software, and you are welcome to redistribute it under the terms of the GNU General Public License. See the LICENSE file for details about using this software. 2007-2021, CISOfy - https://cisofy.com/lynis/ Enterprise support available (compliance, plugins, interface and tools) ################################################################################ [+] Initializing program ------------------------------------ - Detecting OS...  [ DONE ] - Checking profiles... [ DONE ] --------------------------------------------------- Program version: 3.0.3 Operating system: Linux Operating system name: Debian Operating system version: 9 Kernel version: 4.9.0 Hardware platform: x86_64 Hostname: ip-172-31-94-55 --------------------------------------------------- Profiles: /root/scans/lynis/default.prf Log file: /var/log/lynis.log Report file: /var/log/lynis-report.dat Report version: 1.0 Plugin directory: ./plugins --------------------------------------------------- Auditor: [Not Specified] Language: en Test category: all Test group: all --------------------------------------------------- - Program update status...  [ NO UPDATE ] [+] System tools ------------------------------------ - Scanning available tools... - Checking system binaries... [+] Plugins (phase 1) ------------------------------------ Note: plugins have more extensive tests and may take several minutes to complete   - Plugin: pam [..] - Plugin: systemd [. [WARNING]: Test PLGN-0010 had a long execution: 36.360305 seconds ...............] [+] Boot and services ------------------------------------ - Service Manager [ systemd ] - Checking UEFI boot [ DISABLED ] - Checking presence GRUB2 [ FOUND ] - Checking for password protection [ NONE ] - Check running services (systemctl) [ DONE ] Result: found 15 running services - Check enabled services at boot (systemctl) [ DONE ] Result: found 18 enabled services - Check startup files (permissions) [ OK ] [+] Kernel ------------------------------------ - Checking default run level [ RUNLEVEL 5 ] - Checking CPU support (NX/PAE) CPU support: PAE and/or NoeXecute supported [ FOUND ] - Checking kernel version and release [ DONE ] - Checking kernel type [ DONE ] - Checking loaded kernel modules [ DONE ] Found 53 active modules - Checking Linux kernel configuration file [ FOUND ] - Checking default I/O kernel scheduler [ FOUND ] - Checking for available kernel update [ OK ] - Checking core dumps configuration - configuration in systemd conf files [ DEFAULT ] - configuration in etc/profile [ DEFAULT ] - 'hard' configuration in security/limits.conf [ DISABLED ] - 'soft' config in security/limits.conf (implicit) [ DISABLED ] - Checking setuid core dumps configuration [ DISABLED ] - Check if reboot is needed [ NO ] [+] Memory and Processes ------------------------------------ - Checking /proc/meminfo [ FOUND ] - Searching for dead/zombie processes [ NOT FOUND ] - Searching for IO waiting processes [ NOT FOUND ] - Search prelink tooling [ NOT FOUND ] [+] Users, Groups and Authentication ------------------------------------ - Administrator accounts [ OK ] - Unique UIDs [ OK ] - Consistency of group files (grpck) [ OK ] - Unique group IDs [ OK ] - Unique group names [ OK ] - Password file consistency [ OK ] - Password hashing methods [ OK ] - Checking password hashing rounds [ DISABLED ] - Query system users (non daemons) [ DONE ] - NIS+ authentication support [ NOT ENABLED ] - NIS authentication support [ NOT ENABLED ] - Sudoers file(s) [ FOUND ] - Permissions for directory: /etc/sudoers.d [ OK ] - Permissions for: /etc/sudoers [ OK ] - Permissions for: /etc/sudoers.d/90-cloud-init-users [ OK ] - Permissions for: /etc/sudoers.d/README [ OK ] - PAM password strength tools [ OK ] - PAM configuration files (pam.conf) [ FOUND ] - PAM configuration files (pam.d) [ FOUND ] - PAM modules [ FOUND ] - LDAP module in PAM [ NOT FOUND ] - Accounts without expire date [ OK ] - Accounts without password [ OK ] - Locked accounts [ FOUND ] - User password aging (minimum) [ CONFIGURED ] - User password aging (maximum) [ CONFIGURED ] - Checking expired passwords [ OK ] - Checking Linux single user mode authentication [ OK ] - Determining default umask - umask (/etc/profile) [ NOT FOUND ] - umask (/etc/login.defs) [ OK ] - LDAP authentication support [ NOT ENABLED ] - Logging failed login attempts [ ENABLED ] [+] Shells ------------------------------------ - Checking shells from /etc/shells Result: found 5 shells (valid shells: 5). - Session timeout settings/tools [ NONE ] - Checking default umask values - Checking default umask in /etc/bash.bashrc [ NONE ] - Checking default umask in /etc/profile [ NONE ] [+] File systems ------------------------------------ - Checking mount points - Checking /home mount point [ SUGGESTION ] - Checking /tmp mount point [ OK ] - Checking /var mount point [ SUGGESTION ] - Query swap partitions (fstab) [ NONE ] - Testing swap partitions [ OK ] - Testing /proc mount (hidepid) [ SUGGESTION ] - Checking for old files in /tmp [ OK ] - Checking /tmp sticky bit [ OK ] - Checking /var/tmp sticky bit [ OK ] - ACL support root file system [ ENABLED ] - Mount options of / [ NON DEFAULT ] - Mount options of /dev [ PARTIALLY HARDENED ] - Mount options of /dev/shm [ PARTIALLY HARDENED ] - Mount options of /run [ PARTIALLY HARDENED ] - Mount options of /tmp [ HARDENED ] - Total without nodev:9 noexec:9 nosuid:6 ro or noexec (W^X): 9 of total 28 - Disable kernel support of some filesystems - Discovered kernel modules: freevxfs hfs hfsplus jffs2 squashfs udf  [+] USB Devices ------------------------------------ - Checking usb-storage driver (modprobe config) [ DISABLED ] - Checking USBGuard [ NOT FOUND ] [+] Storage ------------------------------------ - Checking firewire ohci driver (modprobe config) [ NOT DISABLED ] [+] NFS ------------------------------------ - Check running NFS daemon [ NOT FOUND ] [+] Name services ------------------------------------ - Checking default DNS search domain [ FOUND ] - Checking search domains [ FOUND ] - Searching DNS domain name [ FOUND ] Domain name: ec2.internal - Checking /etc/hosts - Duplicate entries in hosts file [ NONE ] - Presence of configured hostname in /etc/hosts [ FOUND ] - Hostname mapped to localhost [ NOT FOUND ] - Localhost mapping to IP address [ OK ] [+] Ports and packages ------------------------------------ - Searching package managers - Searching dpkg package manager [ FOUND ] - Querying package manager - Query unpurged packages [ NONE ] - Checking security repository in sources.list file [ OK ] - Checking APT package database [ OK ] - Checking vulnerable packages (apt-get only) [ DONE ] [WARNING]: Test PKGS-7392 had a long execution: 16.238290 seconds - Checking upgradeable packages [ SKIPPED ] - Checking package audit tool [ INSTALLED ] Found: apt-get - Toolkit for automatic upgrades (unattended-upgrade) [ FOUND ] [+] Networking ------------------------------------ - Checking IPv6 configuration [ ENABLED ] Configuration method [ AUTO ] IPv6 only [ NO ] - Checking configured nameservers - Testing nameservers Nameserver: 172.31.0.2 [ SKIPPED ] - Minimal of 2 responsive nameservers [ SKIPPED ] - DNSSEC supported (systemd-resolved) [ NO ] - Checking default gateway [ DONE ] - Getting listening ports (TCP/UDP) [ DONE ] - Checking promiscuous interfaces [ OK ] - Checking waiting connections [ OK ] - Checking status DHCP client [ RUNNING ] - Checking for ARP monitoring software [ NOT FOUND ] - Uncommon network protocols [ 0 ] [+] Printers and Spools ------------------------------------ - Checking cups daemon [ NOT FOUND ] - Checking lp daemon [ NOT RUNNING ] [+] Software: e-mail and messaging ------------------------------------ [+] Software: firewalls ------------------------------------ - Checking iptables kernel module [ FOUND ] - Checking iptables policies of chains [ FOUND ] - Checking for empty ruleset [ WARNING ] - Checking for unused rules [ FOUND ] - Checking host based firewall [ ACTIVE ] [+] Software: webserver ------------------------------------ - Checking Apache [ NOT FOUND ] - Checking nginx [ NOT FOUND ] [+] SSH Support ------------------------------------ - Checking running SSH daemon [ FOUND ] - Searching SSH configuration [ FOUND ] - OpenSSH option: AllowTcpForwarding [ SUGGESTION ] - OpenSSH option: ClientAliveCountMax [ SUGGESTION ] - OpenSSH option: ClientAliveInterval [ SUGGESTION ] - OpenSSH option: Compression [ SUGGESTION ] - OpenSSH option: FingerprintHash [ OK ] - OpenSSH option: GatewayPorts [ OK ] - OpenSSH option: IgnoreRhosts [ OK ] - OpenSSH option: LoginGraceTime [ OK ] - OpenSSH option: LogLevel [ SUGGESTION ] - OpenSSH option: MaxAuthTries [ SUGGESTION ] - OpenSSH option: MaxSessions [ SUGGESTION ] - OpenSSH option: PermitRootLogin [ OK ] - OpenSSH option: PermitUserEnvironment [ OK ] - OpenSSH option: PermitTunnel [ OK ] - OpenSSH option: Port [ SUGGESTION ] - OpenSSH option: PrintLastLog [ OK ] - OpenSSH option: StrictModes [ OK ] - OpenSSH option: TCPKeepAlive [ SUGGESTION ] - OpenSSH option: UseDNS [ OK ] - OpenSSH option: X11Forwarding [ SUGGESTION ] - OpenSSH option: AllowAgentForwarding [ SUGGESTION ] - OpenSSH option: UsePrivilegeSeparation [ OK ] - OpenSSH option: AllowUsers [ NOT FOUND ] - OpenSSH option: AllowGroups [ NOT FOUND ] [+] SNMP Support ------------------------------------ - Checking running SNMP daemon [ NOT FOUND ] [+] Databases ------------------------------------ No database engines found [+] LDAP Services ------------------------------------ - Checking OpenLDAP instance [ NOT FOUND ] [+] PHP ------------------------------------ - Checking PHP [ NOT FOUND ] [+] Squid Support ------------------------------------ - Checking running Squid daemon [ NOT FOUND ] [+] Logging and files ------------------------------------ - Checking for a running log daemon [ OK ] - Checking Syslog-NG status [ NOT FOUND ] - Checking systemd journal status [ FOUND ] - Checking Metalog status [ NOT FOUND ] - Checking RSyslog status [ FOUND ] - Checking RFC 3195 daemon status [ NOT FOUND ] - Checking minilogd instances [ NOT FOUND ] - Checking logrotate presence [ OK ] - Checking remote logging [ NOT ENABLED ] - Checking log directories (static list) [ DONE ] - Checking open log files [ SKIPPED ] [+] Insecure services ------------------------------------ - Installed inetd package [ NOT FOUND ] - Installed xinetd package [ OK ] - xinetd status - Installed rsh client package [ OK ] - Installed rsh server package [ OK ] - Installed telnet client package [ OK ] - Installed telnet server package [ NOT FOUND ] - Checking NIS client installation [ OK ] - Checking NIS server installation [ OK ] - Checking TFTP client installation [ OK ] - Checking TFTP server installation [ OK ] [+] Banners and identification ------------------------------------ - /etc/issue [ FOUND ] - /etc/issue contents [ WEAK ] - /etc/issue.net [ FOUND ] - /etc/issue.net contents [ WEAK ] [+] Scheduled tasks ------------------------------------ - Checking crontab and cronjob files [ DONE ] [+] Accounting ------------------------------------ - Checking accounting information [ OK ] - Checking sysstat accounting data [ NOT FOUND ] - Checking auditd [ NOT FOUND ] [+] Time and Synchronization ------------------------------------ [+] Cryptography ------------------------------------ - Checking for expired SSL certificates [0/127] [ NONE ] - Kernel entropy is sufficient [ YES ] - HW RNG & rngd [ NO ] - SW prng [ NO ] [+] Virtualization ------------------------------------ [+] Containers ------------------------------------ [+] Security frameworks ------------------------------------ - Checking presence AppArmor [ NOT FOUND ] - Checking presence SELinux [ NOT FOUND ] - Checking presence TOMOYO Linux [ NOT FOUND ] - Checking presence grsecurity [ NOT FOUND ] - Checking for implemented MAC framework [ NONE ] [+] Software: file integrity ------------------------------------ - Checking file integrity tools - Tripwire [ FOUND ] - Checking presence integrity tool [ FOUND ] [+] Software: System tooling ------------------------------------ - Checking automation tooling - Automation tooling [ NOT FOUND ] - Checking presence of Fail2ban [ FOUND ] - Checking Fail2ban jails [ ENABLED ] - Checking for IDS/IPS tooling [ FOUND ] [+] Software: Malware ------------------------------------ - Checking chkrootkit [ FOUND ] - Checking Rootkit Hunter [ FOUND ] [+] File Permissions ------------------------------------ - Starting file permissions check File: /boot/grub/grub.cfg [ OK ] File: /etc/cron.allow [ OK ] File: /etc/cron.deny [ SUGGESTION ] File: /etc/crontab [ SUGGESTION ] File: /etc/group [ OK ] File: /etc/group- [ OK ] File: /etc/hosts.allow [ OK ] File: /etc/hosts.deny [ OK ] File: /etc/issue [ OK ] File: /etc/issue.net [ OK ] File: /etc/motd [ OK ] File: /etc/passwd [ OK ] File: /etc/passwd- [ OK ] File: /etc/ssh/sshd_config [ SUGGESTION ] Directory: /root/.ssh [ OK ] Directory: /etc/cron.d [ SUGGESTION ] Directory: /etc/cron.daily [ SUGGESTION ] Directory: /etc/cron.hourly [ SUGGESTION ] Directory: /etc/cron.weekly [ SUGGESTION ] Directory: /etc/cron.monthly [ SUGGESTION ] [+] Home directories ------------------------------------ - Permissions of home directories [ WARNING ] - Ownership of home directories [ OK ] - Checking shell history files [ OK ] [+] Kernel Hardening ------------------------------------ - Comparing sysctl key pairs with scan profile - dev.tty.ldisc_autoload (exp: 0) [ DIFFERENT ] - fs.protected_fifos (exp: 2) [ DIFFERENT ] - fs.protected_hardlinks (exp: 1) [ OK ] - fs.protected_regular (exp: 2) [ DIFFERENT ] - fs.protected_symlinks (exp: 1) [ OK ] - fs.suid_dumpable (exp: 0) [ OK ] - kernel.core_uses_pid (exp: 1) [ OK ] - kernel.ctrl-alt-del (exp: 0) [ OK ] - kernel.dmesg_restrict (exp: 1) [ OK ] - kernel.kptr_restrict (exp: 2) [ OK ] - kernel.modules_disabled (exp: 1) [ DIFFERENT ] - kernel.perf_event_paranoid (exp: 3) [ OK ] - kernel.randomize_va_space (exp: 2) [ OK ] - kernel.sysrq (exp: 0) [ OK ] - kernel.unprivileged_bpf_disabled (exp: 1) [ DIFFERENT ] - kernel.yama.ptrace_scope (exp: 1 2 3) [ DIFFERENT ] - net.core.bpf_jit_harden (exp: 2) [ DIFFERENT ] - net.ipv4.conf.all.accept_redirects (exp: 0) [ OK ] - net.ipv4.conf.all.accept_source_route (exp: 0) [ OK ] - net.ipv4.conf.all.bootp_relay (exp: 0) [ OK ] - net.ipv4.conf.all.forwarding (exp: 0) [ OK ] - net.ipv4.conf.all.log_martians (exp: 1) [ OK ] - net.ipv4.conf.all.mc_forwarding (exp: 0) [ OK ] - net.ipv4.conf.all.proxy_arp (exp: 0) [ OK ] - net.ipv4.conf.all.rp_filter (exp: 1) [ OK ] - net.ipv4.conf.all.send_redirects (exp: 0) [ OK ] - net.ipv4.conf.default.accept_redirects (exp: 0) [ OK ] - net.ipv4.conf.default.accept_source_route (exp: 0) [ OK ] - net.ipv4.conf.default.log_martians (exp: 1) [ OK ] - net.ipv4.icmp_echo_ignore_broadcasts (exp: 1) [ OK ] - net.ipv4.icmp_ignore_bogus_error_responses (exp: 1) [ OK ] - net.ipv4.tcp_syncookies (exp: 1) [ OK ] - net.ipv4.tcp_timestamps (exp: 0 1) [ OK ] - net.ipv6.conf.all.accept_redirects (exp: 0) [ OK ] - net.ipv6.conf.all.accept_source_route (exp: 0) [ OK ] - net.ipv6.conf.default.accept_redirects (exp: 0) [ OK ] - net.ipv6.conf.default.accept_source_route (exp: 0) [ OK ] [+] Hardening ------------------------------------ - Installed compiler(s) [ FOUND ] - Installed malware scanner [ FOUND ] - Non-native binary formats [ NOT FOUND ] [+] Custom tests ------------------------------------ - Running custom tests...  [ NONE ] [+] Plugins (phase 2) ------------------------------------ - Plugins (phase 2) [ DONE ] ================================================================================ -[ Lynis 3.0.3 Results ]- Warnings (1): ---------------------------- ! iptables module(s) loaded, but no rules active [FIRE-4512] https://cisofy.com/lynis/controls/FIRE-4512/ Suggestions (34): ---------------------------- * Set a password on GRUB boot loader to prevent altering boot configuration (e.g. boot in single user mode without password) [BOOT-5122] https://cisofy.com/lynis/controls/BOOT-5122/ * Configure password hashing rounds in /etc/login.defs [AUTH-9230] https://cisofy.com/lynis/controls/AUTH-9230/ * Look at the locked accounts and consider removing them [AUTH-9284] https://cisofy.com/lynis/controls/AUTH-9284/ * To decrease the impact of a full /home file system, place /home on a separate partition [FILE-6310] https://cisofy.com/lynis/controls/FILE-6310/ * To decrease the impact of a full /var file system, place /var on a separate partition [FILE-6310] https://cisofy.com/lynis/controls/FILE-6310/ * Consider disabling unused kernel modules [FILE-6430] - Details : /etc/modprobe.d/blacklist.conf - Solution : Add 'install MODULENAME /bin/true' (without quotes) https://cisofy.com/lynis/controls/FILE-6430/ * Disable drivers like firewire storage when not used, to prevent unauthorized storage or data theft [STRG-1846] https://cisofy.com/lynis/controls/STRG-1846/ * Install debsums utility for the verification of packages with known good database. [PKGS-7370] https://cisofy.com/lynis/controls/PKGS-7370/ * Install package apt-show-versions for patch management purposes [PKGS-7394] https://cisofy.com/lynis/controls/PKGS-7394/ * Determine if protocol 'dccp' is really needed on this system [NETW-3200] https://cisofy.com/lynis/controls/NETW-3200/ * Determine if protocol 'sctp' is really needed on this system [NETW-3200] https://cisofy.com/lynis/controls/NETW-3200/ * Determine if protocol 'rds' is really needed on this system [NETW-3200] https://cisofy.com/lynis/controls/NETW-3200/ * Determine if protocol 'tipc' is really needed on this system [NETW-3200] https://cisofy.com/lynis/controls/NETW-3200/ * Check iptables rules to see which rules are currently not used [FIRE-4513] https://cisofy.com/lynis/controls/FIRE-4513/ * Consider hardening SSH configuration [SSH-7408] - Details : AllowTcpForwarding (set YES to NO) https://cisofy.com/lynis/controls/SSH-7408/ * Consider hardening SSH configuration [SSH-7408] - Details : ClientAliveCountMax (set 3 to 2) https://cisofy.com/lynis/controls/SSH-7408/ * Consider hardening SSH configuration [SSH-7408] - Details : ClientAliveInterval (set 420 to 300) https://cisofy.com/lynis/controls/SSH-7408/ * Consider hardening SSH configuration [SSH-7408] - Details : Compression (set YES to NO) https://cisofy.com/lynis/controls/SSH-7408/ * Consider hardening SSH configuration [SSH-7408] - Details : LogLevel (set INFO to VERBOSE) https://cisofy.com/lynis/controls/SSH-7408/ * Consider hardening SSH configuration [SSH-7408] - Details : MaxAuthTries (set 6 to 3) https://cisofy.com/lynis/controls/SSH-7408/ * Consider hardening SSH configuration [SSH-7408] - Details : MaxSessions (set 10 to 2) https://cisofy.com/lynis/controls/SSH-7408/ * Consider hardening SSH configuration [SSH-7408] - Details : Port (set 22 to ) https://cisofy.com/lynis/controls/SSH-7408/ * Consider hardening SSH configuration [SSH-7408] - Details : TCPKeepAlive (set YES to NO) https://cisofy.com/lynis/controls/SSH-7408/ * Consider hardening SSH configuration [SSH-7408] - Details : X11Forwarding (set YES to NO) https://cisofy.com/lynis/controls/SSH-7408/ * Consider hardening SSH configuration [SSH-7408] - Details : AllowAgentForwarding (set YES to NO) https://cisofy.com/lynis/controls/SSH-7408/ * Enable logging to an external logging host for archiving purposes and additional protection [LOGG-2154] https://cisofy.com/lynis/controls/LOGG-2154/ * Add a legal banner to /etc/issue, to warn unauthorized users [BANN-7126] https://cisofy.com/lynis/controls/BANN-7126/ * Add legal banner to /etc/issue.net, to warn unauthorized users [BANN-7130] https://cisofy.com/lynis/controls/BANN-7130/ * Enable sysstat to collect accounting (no results) [ACCT-9626] https://cisofy.com/lynis/controls/ACCT-9626/ * Enable auditd to collect audit information [ACCT-9628] https://cisofy.com/lynis/controls/ACCT-9628/ * Determine if automation tools are present for system management [TOOL-5002] https://cisofy.com/lynis/controls/TOOL-5002/ * Consider restricting file permissions [FILE-7524] - Details : See screen output or log file - Solution : Use chmod to change file permissions https://cisofy.com/lynis/controls/FILE-7524/ * Double check the permissions of home directories as some might be not strict enough. [HOME-9304] https://cisofy.com/lynis/controls/HOME-9304/ * One or more sysctl values differ from the scan profile and could be tweaked [KRNL-6000] - Solution : Change sysctl value or disable test (skip-test=KRNL-6000:) https://cisofy.com/lynis/controls/KRNL-6000/ Follow-up: ---------------------------- - Show details of a test (lynis show details TEST-ID) - Check the logfile for all details (less /var/log/lynis.log) - Read security controls texts (https://cisofy.com) - Use --upload to upload data to central system (Lynis Enterprise users) ================================================================================ Lynis security scan details: Hardening index : 74 [############## ] Tests performed : 252 Plugins enabled : 2 Components: - Firewall [V] - Malware scanner [V] Scan mode: Normal [V] Forensics [ ] Integration [ ] Pentest [ ] Lynis modules: - Compliance status [?] - Security audit [V] - Vulnerability scan [V] Files: - Test and debug information : /var/log/lynis.log - Report data : /var/log/lynis-report.dat ================================================================================ Lynis 3.0.3 Auditing, system hardening, and compliance for UNIX-based systems (Linux, macOS, BSD, and others) 2007-2021, CISOfy - https://cisofy.com/lynis/ Enterprise support available (compliance, plugins, interface and tools) ================================================================================ [TIP]: Enhance Lynis audits by adding your settings to custom.prf (see /root/scans/lynis/default.prf for all settings)