[ Lynis 2.6.2 ]
################################################################################
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.
2007-2018, CISOfy - https://cisofy.com/lynis/
Enterprise support available (compliance, plugins, interface and tools)
################################################################################
[+] Initializing program
------------------------------------
- Detecting OS... [ DONE ]
- Checking profiles... [ DONE ]
---------------------------------------------------
Program version: 2.6.2
Operating system: Linux
Operating system name: Ubuntu Linux
Operating system version: 20.04
Kernel version: 5.15.35
Hardware platform: x86_64
Hostname: emc-gw
---------------------------------------------------
Profiles: /etc/lynis/default.prf
Log file: /var/log/lynis.log
Report file: /var/log/lynis-report.dat
Report version: 1.0
Plugin directory: /etc/lynis/plugins
---------------------------------------------------
Auditor: [Not Specified]
Language: en
Test category: all
Test group: all
---------------------------------------------------
- Program update status... [ WARNING ]
===============================================================================
Lynis update available
===============================================================================
Current version is more than 4 months old
Current version : 262 Latest version : 308
Please update to the latest version.
New releases include additional features, bug fixes, tests, and baselines.
Download the latest version:
Packages (DEB/RPM) - https://packages.cisofy.com
Website (TAR) - https://cisofy.com/downloads/
GitHub (source) - https://github.com/CISOfy/lynis
===============================================================================
[+] 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: debian
[
[+] Debian Tests
------------------------------------
- Checking for system binaries that are required by Debian Tests...
- Checking /bin... [ FOUND ]
- Checking /sbin... [ FOUND ]
- Checking /usr/bin... [ FOUND ]
- Checking /usr/sbin... [ FOUND ]
- Checking /usr/local/bin... [ FOUND ]
- Checking /usr/local/sbin... [ FOUND ]
- Authentication:
- PAM (Pluggable Authentication Modules):
- libpam-tmpdir [ Not Installed ]
- libpam-usb [ Not Installed ]
- File System Checks:
- DM-Crypt, Cryptsetup & Cryptmount:
- Software:
- apt-listbugs [ Not Installed ]
- apt-listchanges [ Not Installed ]
- checkrestart [ Not Installed ]
- needrestart [ Not Installed ]
- debsecan [ Not Installed ]
- debsums [ Not Installed ]
- fail2ban [ Not Installed ]
]
[+] Boot and services
------------------------------------
- Service Manager [ systemd ]
- Checking UEFI boot [ ENABLED ]
- Checking Secure Boot [ DISABLED ]
- Boot loader [ NONE FOUND ]
- Check running services (systemctl) [ DONE ]
Result: found 16 running services
- Check enabled services at boot (systemctl) [ DONE ]
Result: found 26 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 161 active modules
- Checking Linux kernel configuration file [ NOT FOUND ]
- Checking for available kernel update [ UNKNOWN ]
- Checking core dumps configuration [ DISABLED ]
- Checking setuid core dumps configuration [ DEFAULT ]
- Check if reboot is needed [ UNKNOWN ]
[+] Memory and Processes
------------------------------------
- Checking /proc/meminfo [ FOUND ]
- Searching for dead/zombie processes [ OK ]
- Searching for IO waiting processes [ OK ]
[+] 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 ]
- Query system users (non daemons) [ DONE ]
- NIS+ authentication support [ NOT ENABLED ]
- NIS authentication support [ NOT ENABLED ]
- sudoers file [ FOUND ]
- Check sudoers file permissions [ OK ]
- PAM password strength tools [ SUGGESTION ]
- 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 ]
- Checking user password aging (minimum) [ DISABLED ]
- User password aging (maximum) [ DISABLED ]
- Checking expired passwords [ OK ]
- Checking Linux single user mode authentication [ WARNING ]
- Determining default umask
- umask (/etc/profile) [ NOT FOUND ]
- umask (/etc/login.defs) [ SUGGESTION ]
- LDAP authentication support [ NOT ENABLED ]
- Logging failed login attempts [ ENABLED ]
[+] Shells
------------------------------------
- Checking shells from /etc/shells
Result: found 4 shells (valid shells: 4).
- 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 [ SUGGESTION ]
- 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 ]
- Disable kernel support of some filesystems
[+] USB Devices
------------------------------------
- Checking usb-storage driver (modprobe config) [ NOT DISABLED ]
- Checking USB devices authorization [ ENABLED ]
- Checking USBGuard [ NOT FOUND ]
[+] Storage
------------------------------------
- Checking firewire ohci driver (modprobe config) [ DISABLED ]
[+] NFS
------------------------------------
- Check running NFS daemon [ NOT FOUND ]
[+] Name services
------------------------------------
- Checking search domains [ FOUND ]
- Searching DNS domain name [ FOUND ]
Domain name: polyomica.com
- Checking /etc/hosts
- Checking /etc/hosts (duplicates) [ OK ]
- Checking /etc/hosts (hostname) [ OK ]
- Checking /etc/hosts (localhost) [ OK ]
- Checking /etc/hosts (localhost to IP) [ 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 [ WARNING ]
- Checking upgradeable packages [ SKIPPED ]
- Checking package audit tool [ INSTALLED ]
Found: apt-get
[+] Networking
------------------------------------
- Checking IPv6 configuration [ ENABLED ]
Configuration method [ AUTO ]
IPv6 only [ NO ]
- Checking configured nameservers
- Testing nameservers
Nameserver: 93.180.70.22 [ OK ]
Nameserver: 93.180.70.30 [ OK ]
Nameserver: 2001:4860:4860::8888 [ NO RESPONSE ]
- Minimal of 2 responsive nameservers [ OK ]
- Checking default gateway [ DONE ]
- Getting listening ports (TCP/UDP) [ DONE ]
* Found 11 ports
- Checking promiscuous interfaces [ OK ]
- Checking waiting connections [ OK ]
- Checking status DHCP client [ NOT ACTIVE ]
- Checking for ARP monitoring software [ NOT FOUND ]
[+] Printers and Spools
------------------------------------
- Checking cups daemon [ NOT FOUND ]
- Checking lp daemon [ NOT RUNNING ]
[+] Software: e-mail and messaging
------------------------------------
- Postfix status [ RUNNING ]
- Postfix configuration [ FOUND ]
- Postfix banner [ WARNING ]
[+] Software: firewalls
------------------------------------
- Checking iptables kernel module [ FOUND ]
- Checking iptables policies of chains [ FOUND ]
- Checking for empty ruleset [ WARNING ]
- Checking for unused rules [ OK ]
- 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 ]
- SSH option: AllowTcpForwarding [ SUGGESTION ]
- SSH option: ClientAliveCountMax [ SUGGESTION ]
- SSH option: ClientAliveInterval [ OK ]
- SSH option: Compression [ SUGGESTION ]
- SSH option: FingerprintHash [ OK ]
- SSH option: GatewayPorts [ OK ]
- SSH option: IgnoreRhosts [ OK ]
- SSH option: LoginGraceTime [ OK ]
- SSH option: LogLevel [ SUGGESTION ]
- SSH option: MaxAuthTries [ SUGGESTION ]
- SSH option: MaxSessions [ SUGGESTION ]
- SSH option: PermitRootLogin [ SUGGESTION ]
- SSH option: PermitUserEnvironment [ OK ]
- SSH option: PermitTunnel [ OK ]
- SSH option: Port [ OK ]
- SSH option: PrintLastLog [ OK ]
- SSH option: Protocol [ NOT FOUND ]
- SSH option: StrictModes [ OK ]
- SSH option: TCPKeepAlive [ SUGGESTION ]
- SSH option: UseDNS [ OK ]
- SSH option: UsePrivilegeSeparation [ NOT FOUND ]
- SSH option: VerifyReverseMapping [ NOT FOUND ]
- SSH option: X11Forwarding [ SUGGESTION ]
- SSH option: AllowAgentForwarding [ SUGGESTION ]
- SSH option: AllowUsers [ NOT FOUND ]
- SSH 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 log directories (static list) [ DONE ]
- Checking open log files [ DONE ]
- Checking deleted files in use [ DONE ]
[+] Insecure services
------------------------------------
- Checking inetd status [ NOT ACTIVE ]
[+] Banners and identification
------------------------------------
- /etc/issue [ FOUND ]
- /etc/issue contents [ WEAK ]
- /etc/issue.net [ FOUND ]
- /etc/issue.net contents [ WEAK ]
[+] Scheduled tasks
------------------------------------
- Checking crontab/cronjob [ DONE ]
[+] Accounting
------------------------------------
- Checking accounting information [ NOT FOUND ]
- Checking sysstat accounting data [ NOT FOUND ]
- Checking auditd [ NOT FOUND ]
[+] Time and Synchronization
------------------------------------
- NTP daemon found: systemd (timesyncd) [ FOUND ]
- Checking for a running NTP daemon or client [ OK ]
[+] Cryptography
------------------------------------
- Checking for expired SSL certificates [0/2] [ NONE ]
[+] Virtualization
------------------------------------
[+] Containers
------------------------------------
[+] Security frameworks
------------------------------------
- Checking presence AppArmor [ FOUND ]
- Checking AppArmor status [ ENABLED ]
- Checking presence SELinux [ NOT FOUND ]
- Checking presence grsecurity [ NOT FOUND ]
- Checking for implemented MAC framework [ OK ]
[+] Software: file integrity
------------------------------------
- Checking file integrity tools
- Checking presence integrity tool [ NOT FOUND ]
[+] Software: System tooling
------------------------------------
- Checking automation tooling
- Automation tooling [ NOT FOUND ]
- Checking for IDS/IPS tooling [ NONE ]
[+] Software: Malware
------------------------------------
[+] File Permissions
------------------------------------
- Starting file permissions check
/root/.ssh [ OK ]
[+] Home directories
------------------------------------
- Checking shell history files [ OK ]
[+] Kernel Hardening
------------------------------------
- Comparing sysctl key pairs with scan profile
- fs.suid_dumpable (exp: 0) [ OK ]
- kernel.core_uses_pid (exp: 1) [ DIFFERENT ]
- kernel.ctrl-alt-del (exp: 0) [ OK ]
- kernel.dmesg_restrict (exp: 1) [ OK ]
- kernel.kptr_restrict (exp: 2) [ DIFFERENT ]
- kernel.randomize_va_space (exp: 2) [ OK ]
- kernel.sysrq (exp: 0) [ DIFFERENT ]
- kernel.yama.ptrace_scope (exp: 1 2 3) [ OK ]
- 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) [ DIFFERENT ]
- net.ipv4.conf.all.log_martians (exp: 1) [ DIFFERENT ]
- 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) [ DIFFERENT ]
- net.ipv4.conf.all.send_redirects (exp: 0) [ DIFFERENT ]
- net.ipv4.conf.default.accept_redirects (exp: 0) [ DIFFERENT ]
- net.ipv4.conf.default.accept_source_route (exp: 0) [ DIFFERENT ]
- net.ipv4.conf.default.log_martians (exp: 1) [ DIFFERENT ]
- 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) [ DIFFERENT ]
- net.ipv6.conf.all.accept_source_route (exp: 0) [ OK ]
- net.ipv6.conf.default.accept_redirects (exp: 0) [ DIFFERENT ]
- net.ipv6.conf.default.accept_source_route (exp: 0) [ OK ]
[+] Hardening
------------------------------------
- Installed compiler(s) [ NOT FOUND ]
- Installed malware scanner [ NOT FOUND ]
[+] Custom Tests
------------------------------------
- Running custom tests... [ NONE ]
[+] Plugins (phase 2)
------------------------------------
================================================================================
-[ Lynis 2.6.2 Results ]-
Warnings (6):
----------------------------
! Version of Lynis is very old and should be updated [LYNIS]
https://cisofy.com/controls/LYNIS/
! No password set for single mode [AUTH-9308]
https://cisofy.com/controls/AUTH-9308/
! Found one or more vulnerable packages. [PKGS-7392]
https://cisofy.com/controls/PKGS-7392/
! Nameserver 2001:4860:4860::8888 does not respond [NETW-2704]
https://cisofy.com/controls/NETW-2704/
! Found some information disclosure in SMTP banner (OS or software name) [MAIL-8818]
https://cisofy.com/controls/MAIL-8818/
! iptables module(s) loaded, but no rules active [FIRE-4512]
https://cisofy.com/controls/FIRE-4512/
Suggestions (45):
----------------------------
* Install libpam-tmpdir to set $TMP and $TMPDIR for PAM sessions [CUST-0280]
https://your-domain.example.org/controls/CUST-0280/
* Install libpam-usb to enable multi-factor authentication for PAM sessions [CUST-0285]
https://your-domain.example.org/controls/CUST-0285/
* Install apt-listbugs to display a list of critical bugs prior to each APT installation. [CUST-0810]
https://your-domain.example.org/controls/CUST-0810/
* Install apt-listchanges to display any significant changes prior to any upgrade via APT. [CUST-0811]
https://your-domain.example.org/controls/CUST-0811/
* Install debian-goodies so that you can run checkrestart after upgrades to determine which services are using old versions of libraries and need restarting. [CUST-0830]
https://your-domain.example.org/controls/CUST-0830/
* Install needrestart, alternatively to debian-goodies, so that you can run needrestart after upgrades to determine which daemons are using old versions of libraries and need restarting. [CUST-0831]
https://your-domain.example.org/controls/CUST-0831/
* Install debsecan to generate lists of vulnerabilities which affect this installation. [CUST-0870]
https://your-domain.example.org/controls/CUST-0870/
* Install debsums for the verification of installed package files against MD5 checksums. [CUST-0875]
https://your-domain.example.org/controls/CUST-0875/
* Install fail2ban to automatically ban hosts that commit multiple authentication errors. [DEB-0880]
https://cisofy.com/controls/DEB-0880/
* Determine why /vmlinuz is missing on this Debian/Ubuntu system. [KRNL-5788]
- Details : /vmlinuz
https://cisofy.com/controls/KRNL-5788/
* Check the output of apt-cache policy manually to determine why output is empty [KRNL-5788]
https://cisofy.com/controls/KRNL-5788/
* Install a PAM module for password strength testing like pam_cracklib or pam_passwdqc [AUTH-9262]
https://cisofy.com/controls/AUTH-9262/
* Configure minimum password age in /etc/login.defs [AUTH-9286]
https://cisofy.com/controls/AUTH-9286/
* Configure maximum password age in /etc/login.defs [AUTH-9286]
https://cisofy.com/controls/AUTH-9286/
* Set password for single user mode to minimize physical access attack surface [AUTH-9308]
https://cisofy.com/controls/AUTH-9308/
* Default umask in /etc/login.defs could be more strict like 027 [AUTH-9328]
https://cisofy.com/controls/AUTH-9328/
* To decrease the impact of a full /home file system, place /home on a separated partition [FILE-6310]
https://cisofy.com/controls/FILE-6310/
* To decrease the impact of a full /tmp file system, place /tmp on a separated partition [FILE-6310]
https://cisofy.com/controls/FILE-6310/
* To decrease the impact of a full /var file system, place /var on a separated partition [FILE-6310]
https://cisofy.com/controls/FILE-6310/
* Disable drivers like USB storage when not used, to prevent unauthorized storage or data theft [STRG-1840]
https://cisofy.com/controls/STRG-1840/
* Install debsums utility for the verification of packages with known good database. [PKGS-7370]
https://cisofy.com/controls/PKGS-7370/
* Update your system with apt-get update, apt-get upgrade, apt-get dist-upgrade and/or unattended-upgrades [PKGS-7392]
https://cisofy.com/controls/PKGS-7392/
* Install package apt-show-versions for patch management purposes [PKGS-7394]
https://cisofy.com/controls/PKGS-7394/
* Check connection to this nameserver and make sure no outbound DNS queries are blocked (port 53 UDP and TCP). [NETW-2704]
https://cisofy.com/controls/NETW-2704/
* Consider running ARP monitoring software (arpwatch,arpon) [NETW-3032]
https://cisofy.com/controls/NETW-3032/
* You are advised to hide the mail_name (option: smtpd_banner) from your postfix configuration. Use postconf -e or change your main.cf file (/etc/postfix/main.cf) [MAIL-8818]
https://cisofy.com/controls/MAIL-8818/
* Consider hardening SSH configuration [SSH-7408]
- Details : AllowTcpForwarding (YES --> NO)
https://cisofy.com/controls/SSH-7408/
* Consider hardening SSH configuration [SSH-7408]
- Details : ClientAliveCountMax (3 --> 2)
https://cisofy.com/controls/SSH-7408/
* Consider hardening SSH configuration [SSH-7408]
- Details : Compression (YES --> (DELAYED|NO))
https://cisofy.com/controls/SSH-7408/
* Consider hardening SSH configuration [SSH-7408]
- Details : LogLevel (INFO --> VERBOSE)
https://cisofy.com/controls/SSH-7408/
* Consider hardening SSH configuration [SSH-7408]
- Details : MaxAuthTries (6 --> 2)
https://cisofy.com/controls/SSH-7408/
* Consider hardening SSH configuration [SSH-7408]
- Details : MaxSessions (10 --> 2)
https://cisofy.com/controls/SSH-7408/
* Consider hardening SSH configuration [SSH-7408]
- Details : PermitRootLogin (WITHOUT-PASSWORD --> NO)
https://cisofy.com/controls/SSH-7408/
* Consider hardening SSH configuration [SSH-7408]
- Details : TCPKeepAlive (YES --> NO)
https://cisofy.com/controls/SSH-7408/
* Consider hardening SSH configuration [SSH-7408]
- Details : X11Forwarding (YES --> NO)
https://cisofy.com/controls/SSH-7408/
* Consider hardening SSH configuration [SSH-7408]
- Details : AllowAgentForwarding (YES --> NO)
https://cisofy.com/controls/SSH-7408/
* Add a legal banner to /etc/issue, to warn unauthorized users [BANN-7126]
https://cisofy.com/controls/BANN-7126/
* Add legal banner to /etc/issue.net, to warn unauthorized users [BANN-7130]
https://cisofy.com/controls/BANN-7130/
* Enable process accounting [ACCT-9622]
https://cisofy.com/controls/ACCT-9622/
* Enable sysstat to collect accounting (no results) [ACCT-9626]
https://cisofy.com/controls/ACCT-9626/
* Enable auditd to collect audit information [ACCT-9628]
https://cisofy.com/controls/ACCT-9628/
* Install a file integrity tool to monitor changes to critical and sensitive files [FINT-4350]
https://cisofy.com/controls/FINT-4350/
* Determine if automation tools are present for system management [TOOL-5002]
https://cisofy.com/controls/TOOL-5002/
* 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:<sysctl-key>)
https://cisofy.com/controls/KRNL-6000/
* Harden the system by installing at least one malware scanner, to perform periodic file system scans [HRDN-7230]
- Solution : Install a tool like rkhunter, chkrootkit, OSSEC
https://cisofy.com/controls/HRDN-7230/
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 : 60 [############ ]
Tests performed : 218
Plugins enabled : 1
Components:
- Firewall [V]
- Malware scanner [X]
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
================================================================================
Notice: Lynis update available
Current version : 262 Latest version : 308
================================================================================
Lynis 2.6.2
Auditing, system hardening, and compliance for UNIX-based systems
(Linux, macOS, BSD, and others)
2007-2018, 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 /etc/lynis/default.prf for all settings)