diff options
Diffstat (limited to 'perl-install/security')
| -rw-r--r-- | perl-install/security/help.pm | 139 | ||||
| -rw-r--r-- | perl-install/security/l10n.pm | 66 | ||||
| -rw-r--r-- | perl-install/security/level.pm | 71 | ||||
| -rw-r--r-- | perl-install/security/msec.pm | 187 | ||||
| -rw-r--r-- | perl-install/security/various.pm | 30 |
5 files changed, 493 insertions, 0 deletions
diff --git a/perl-install/security/help.pm b/perl-install/security/help.pm new file mode 100644 index 000000000..c69f26c95 --- /dev/null +++ b/perl-install/security/help.pm @@ -0,0 +1,139 @@ +package security::help; +# This help was forked from msec internal function descriptions +# They were then reworked in order to be targeted for end users, not msec developpers + + +use strict; +use common; + +our %help = ( + +'accept_bogus_error_responses' => N("Accept/Refuse bogus IPv4 error messages."), + +'accept_broadcasted_icmp_echo' => N("Accept/Refuse broadcasted icmp echo."), + +'accept_icmp_echo' => N("Accept/Refuse icmp echo."), + +'allow_autologin' => N("Allow/Forbid autologin."), + +'allow_issues' => + #-PO: here "ALL" is a value in a pull-down menu; translate it the same as "ALL" is + N("If set to \"ALL\", /etc/issue and /etc/issue.net are allowed to exist. + +If set to NONE, no issues are allowed. + +Else only /etc/issue is allowed."), + +'allow_reboot' => N("Allow/Forbid reboot by the console user."), + +'allow_remote_root_login' => N("Allow/Forbid remote root login."), + +'allow_root_login' => N("Allow/Forbid direct root login."), + +'allow_user_list' => N("Allow/Forbid the list of users on the system on display managers (kdm and gdm)."), + +'allow_xauth_from_root' => N("Allow/forbid to export display when +passing from the root account to the other users. + +See pam_xauth(8) for more details.'"), + +'allow_x_connections' => N("Allow/Forbid X connections: + +- ALL (all connections are allowed), + +- LOCAL (only connection from local machine), + +- NONE (no connection)."), + +'allow_xserver_to_listen' => N("The argument specifies if clients are authorized to connect +to the X server from the network on the tcp port 6000 or not."), + +'authorize_services' => + #-PO: here "ALL", "LOCAL" and "NONE" are values in a pull-down menu; translate them the same as they're + N("Authorize: + +- all services controlled by tcp_wrappers (see hosts.deny(5) man page) if set to \"ALL\", + +- only local ones if set to \"LOCAL\" + +- none if set to \"NONE\". + +To authorize the services you need, use /etc/hosts.allow (see hosts.allow(5))."), + +'create_server_link' => N("If SERVER_LEVEL (or SECURE_LEVEL if absent) +is greater than 3 in /etc/security/msec/security.conf, creates the +symlink /etc/security/msec/server to point to +/etc/security/msec/server.<SERVER_LEVEL>. + +The /etc/security/msec/server is used by chkconfig --add to decide to +add a service if it is present in the file during the installation of +packages."), + +'enable_at_crontab' => N("Enable/Disable crontab and at for users. + +Put allowed users in /etc/cron.allow and /etc/at.allow (see man at(1) +and crontab(1))."), + +'enable_console_log' => N("Enable/Disable syslog reports to console 12"), + +'enable_dns_spoofing_protection' => N("Enable/Disable name resolution spoofing protection. If +\"%s\" is true, also reports to syslog.", N("Security Alerts:")), + +'enable_ip_spoofing_protection' => N("Enable/Disable IP spoofing protection."), + +'enable_libsafe' => N("Enable/Disable libsafe if libsafe is found on the system."), + +'enable_log_strange_packets' => N("Enable/Disable the logging of IPv4 strange packets."), + +'enable_msec_cron' => N("Enable/Disable msec hourly security check."), + +'enable_pam_wheel_for_su' => N("Enable su only from members of the wheel group. If set to no, allows su from any user."), + +'enable_password' => N("Use password to authenticate users."), + +'enable_promisc_check' => N("Activate/Disable ethernet cards promiscuity check."), + +'enable_security_check' => N("Activate/Disable daily security check."), + +'enable_sulogin' => N("Enable/Disable sulogin(8) in single user level."), + +'no_password_aging_for' => N("Add the name as an exception to the handling of password aging by msec."), + +'password_aging' => N("Set password aging to \"max\" days and delay to change to \"inactive\"."), + +'password_history' => N("Set the password history length to prevent password reuse."), + +'password_length' => N("Set the password minimum length and minimum number of digit and minimum number of capitalized letters."), + +'set_root_umask' => N("Set the root umask."), +CHECK_OPEN_PORT => N("if set to yes, check open ports."), +CHECK_PASSWD => N("if set to yes, check for: + +- empty passwords, + +- no password in /etc/shadow + +- for users with the 0 id other than root."), +CHECK_PERMS => N("if set to yes, check permissions of files in the users' home."), +CHECK_PROMISC => N("if set to yes, check if the network devices are in promiscuous mode."), +CHECK_SECURITY => N("if set to yes, run the daily security checks."), +CHECK_SGID => N("if set to yes, check additions/removals of sgid files."), +CHECK_SHADOW => N("if set to yes, check empty password in /etc/shadow."), +CHECK_SUID_MD5 => N("if set to yes, verify checksum of the suid/sgid files."), +CHECK_SUID_ROOT => N("if set to yes, check additions/removals of suid root files."), +CHECK_UNOWNED => N("if set to yes, report unowned files."), +CHECK_WRITABLE => N("if set to yes, check files/directories writable by everybody."), +CHKROOTKIT_CHECK => N("if set to yes, run chkrootkit checks."), +MAIL_USER => N("if set, send the mail report to this email address else send it to root."), +MAIL_WARN => N("if set to yes, report check result by mail."), +MAIL_EMPTY_CONTENT => N("Do not send mails if there's nothing to warn about"), +RPM_CHECK => N("if set to yes, run some checks against the rpm database."), +SYSLOG_WARN => N("if set to yes, report check result to syslog."), +TTY_WARN => N("if set to yes, reports check result to tty."), + +'set_shell_history_size' => N("Set shell commands history size. A value of -1 means unlimited."), + +'set_shell_timeout' => N("Set the shell timeout. A value of zero means no timeout.") . "\n\n" . N("Timeout unit is second"), + +'set_user_umask' => N("Set the user umask."), +); diff --git a/perl-install/security/l10n.pm b/perl-install/security/l10n.pm new file mode 100644 index 000000000..355f1fff1 --- /dev/null +++ b/perl-install/security/l10n.pm @@ -0,0 +1,66 @@ +package security::l10n; +# This help was build from stripped from python description of msec functions +# soft/msec/share/libmsec.py +# +# It's used in draksec option labels + +use common; + +sub fields() { + return ( + 'accept_bogus_error_responses' => N("Accept bogus IPv4 error messages"), + 'accept_broadcasted_icmp_echo' => N("Accept broadcasted icmp echo"), + 'accept_icmp_echo' => N("Accept icmp echo"), + 'allow_autologin' => N("Autologin"), + 'allow_issues' => N("/etc/issue* exist"), + 'allow_reboot' => N("Reboot by the console user"), + 'allow_remote_root_login' => N("Allow remote root login"), + 'allow_root_login' => N("Direct root login"), + 'allow_user_list' => N("List users on display managers (kdm and gdm)"), + 'allow_xauth_from_root' => N("Export display when passing from root to the other users"), + 'allow_x_connections' => N("Allow X Window connections"), + 'allow_xserver_to_listen' => N("Authorize TCP connections to X Window"), + 'authorize_services' => N("Authorize all services controlled by tcp_wrappers"), + 'create_server_link' => N("Chkconfig obey msec rules"), + 'enable_at_crontab' => N("Enable \"crontab\" and \"at\" for users"), + 'enable_console_log' => N("Syslog reports to console 12"), + 'enable_dns_spoofing_protection' => N("Name resolution spoofing protection"), + 'enable_ip_spoofing_protection' => N("Enable IP spoofing protection"), + 'enable_libsafe' => N("Enable libsafe if libsafe is found on the system"), + 'enable_log_strange_packets' => N("Enable the logging of IPv4 strange packets"), + 'enable_msec_cron' => N("Enable msec hourly security check"), + 'enable_pam_wheel_for_su' => N("Enable su only from the wheel group members"), + 'enable_password' => N("Use password to authenticate users"), + 'enable_promisc_check' => N("Ethernet cards promiscuity check"), + 'enable_security_check' => N("Daily security check"), + 'enable_sulogin' => N("Sulogin(8) in single user level"), + 'no_password_aging_for' => N("No password aging for"), + 'password_aging' => N("Set password expiration and account inactivation delays"), + 'password_history' => N("Password history length"), + 'password_length' => N("Password minimum length and number of digits and upcase letters"), + 'set_root_umask' => N("Root umask"), + 'set_shell_history_size' => N("Shell history size"), + 'set_shell_timeout' => N("Shell timeout"), + 'set_user_umask' => N("User umask"), + CHECK_OPEN_PORT => N("Check open ports"), + CHECK_PASSWD => N("Check for unsecured accounts"), + CHECK_PERMS => N("Check permissions of files in the users' home"), + CHECK_PROMISC => N("Check if the network devices are in promiscuous mode"), + CHECK_SECURITY => N("Run the daily security checks"), + CHECK_SGID => N("Check additions/removals of sgid files"), + CHECK_SHADOW => N("Check empty password in /etc/shadow"), + CHECK_SUID_MD5 => N("Verify checksum of the suid/sgid files"), + CHECK_SUID_ROOT => N("Check additions/removals of suid root files"), + CHECK_UNOWNED => N("Report unowned files"), + CHECK_WRITABLE => N("Check files/directories writable by everybody"), + CHKROOTKIT_CHECK => N("Run chkrootkit checks"), + MAIL_EMPTY_CONTENT => N("Do not send empty mail reports"), + MAIL_USER => N("If set, send the mail report to this email address else send it to root"), + MAIL_WARN => N("Report check result by mail"), + RPM_CHECK => N("Run some checks against the rpm database"), + SYSLOG_WARN => N("Report check result to syslog"), + TTY_WARN => N("Reports check result to tty"), + ); +} + +1; diff --git a/perl-install/security/level.pm b/perl-install/security/level.pm new file mode 100644 index 000000000..0c05eb1e4 --- /dev/null +++ b/perl-install/security/level.pm @@ -0,0 +1,71 @@ +package security::level; + +use strict; +use common; +use run_program; + + +sub level_list() { + ( + 0 => N("Welcome To Crackers"), + 1 => N("Poor"), + 2 => N("Standard"), + 3 => N("High"), + 4 => N("Higher"), + 5 => N("Paranoid"), + ); +} + +sub to_string { +{ level_list() }->{$_[0]} } +sub from_string { +{ reverse level_list() }->{$_[0]} || 2 } + +sub get_string() { to_string(get() || 2) } +sub get_common_list() { map { to_string($_) } (1, 2, 3, 4, 5) } + +sub get() { + cat_("$::prefix/etc/profile") =~ /export SECURE_LEVEL=(\d+)/ && $1 || #- 8.0 msec + cat_("$::prefix/etc/profile.d/msec.sh") =~ /export SECURE_LEVEL=(\d+)/ && $1 || #- 8.1 msec + ${{ getVarsFromSh("$::prefix/etc/sysconfig/msec") }}{SECURE_LEVEL} || #- 8.2 msec + $ENV{SECURE_LEVEL} || 3; +} + +sub set { + my ($security) = @_; + run_program::rooted($::prefix, 'msec', '-o', 'run_commands=0', '-o', 'log=stderr', $security || 3); +} + +sub level_choose { + my ($in, $security, $libsafe, $email) = @_; + + my %help = ( + 0 => N("This level is to be used with care. It makes your system more easy to use, +but very sensitive. It must not be used for a machine connected to others +or to the Internet. There is no password access."), + 1 => N("Passwords are now enabled, but use as a networked computer is still not recommended."), + 2 => N("This is the standard security recommended for a computer that will be used to connect to the Internet as a client."), + 3 => N("There are already some restrictions, and more automatic checks are run every night."), + 4 => N("With this security level, the use of this system as a server becomes possible. +The security is now high enough to use the system as a server which can accept +connections from many clients. Note: if your machine is only a client on the Internet, you should choose a lower level."), + 5 => N("This is similar to the previous level, but the system is entirely closed and security features are at their maximum."), + ); + + my @l = 2 .. 5; + + $in->ask_from_({ title => $::isInstall ? N("Security") : N("DrakSec Basic Options"), + icon => 'banner-security', + messages => N("Please choose the desired security level") . "\n\n" . + join('', map { to_string($_) . ": " . formatAlaTeX($help{$_}) . "\n\n" } @l), + interactive_help_id => 'miscellaneous', + }, [ + { label => N("Security level"), val => $security, list => \@l, format => \&to_string }, + if_($in->do_pkgs->is_installed('libsafe') && arch() =~ /^i.86/, + { label => N("Use libsafe for servers"), val => $libsafe, type => 'bool', text => + N("A library which defends against buffer overflow and format string attacks.") }), + { label => N("Security Administrator (login or email)"), val => $email, }, + ], + ); +} + + +1; diff --git a/perl-install/security/msec.pm b/perl-install/security/msec.pm new file mode 100644 index 000000000..4258653ef --- /dev/null +++ b/perl-install/security/msec.pm @@ -0,0 +1,187 @@ +package security::msec; + +use strict; +use MDK::Common; + + +#------------------------------------------------------------- +# msec options managment methods + + +#------------------------------------------------------------- +# option defaults + +sub load_defaults { + my ($msec, $category) = @_; + my $separator = $msec->{$category}{def_separator}; + map { + my ($opt, $val) = split(/$separator/, $_, 2); + chop $val; + if_($opt ne 'set_security_conf', $opt => $val); + } cat_($msec->{$category}{defaults_file}), if_($category eq "checks", 'MAIL_USER'); +} + + +# get_XXX_default(function) - +# return the default of the function|check passed in argument. + +sub get_check_default { + my ($msec, $check) = @_; + $msec->{checks}{default}{$check}; +} + +sub get_function_default { + my ($msec, $function) = @_; + $msec->{functions}{default}{$function}; +} + + + +#------------------------------------------------------------- +# option values + +sub load_values { + my ($msec, $category) = @_; + my $separator = $msec->{$category}{val_separator}; + map { + my ($opt, $val) = split /$separator/; + chop $val; + $val =~ s/[()]//g; + chop $opt if $separator eq '\('; # $opt =~ s/ //g if $separator eq '\('; + if_(defined($val), $opt => $val); + } cat_($msec->{$category}{values_file}); +} + + +# get_XXX_value(check|function) - +# return the value of the function|check passed in argument. +# If no value is set, return "default". + +sub get_function_value { + my ($msec, $function) = @_; + exists $msec->{functions}{value}{$function} ? $msec->{functions}{value}{$function} : "default"; +} + +sub get_check_value { + my ($msec, $check) = @_; + $msec->{checks}{value}{$check} || "default"; +} + + + +#------------------------------------------------------------- +# get list of check|functions + +# list_(functions|checks) - +# return a list of functions|checks handled by level.local|security.conf + +sub raw_checks_list { + my ($msec) = @_; + keys %{$msec->{checks}{default}}; +} + +sub list_checks { + my ($msec) = @_; + difference2([ $msec->raw_checks_list ], [ qw(MAIL_WARN MAIL_USER) ]); +} + +sub list_functions { + my ($msec, $category) = @_; + + ## TODO handle 3 last functions here so they can be removed from this list + my @ignore_list = qw(indirect commit_changes closelog error initlog log set_secure_level + set_security_conf set_server_level print_changes get_translation create_server_link); + + my %options = ( + 'network' => [qw(accept_bogus_error_responses accept_broadcasted_icmp_echo accept_icmp_echo + enable_dns_spoofing_protection enable_ip_spoofing_protection + enable_log_strange_packets enable_promisc_check no_password_aging_for)], + 'system' => [qw(allow_autologin allow_issues allow_reboot allow_remote_root_login + allow_root_login allow_user_list allow_xauth_from_root allow_x_connections allow_xserver_to_listen + authorize_services enable_at_crontab enable_console_log + enable_msec_cron enable_pam_wheel_for_su enable_password enable_security_check + enable_sulogin password_aging password_history password_length set_root_umask + set_shell_history_size set_shell_timeout set_user_umask)]); + + # get all function names; filter out those which are in the ignore + # list, return what lefts. + grep { !member($_, @ignore_list) && member($_, @{$options{$category}}) } keys %{$msec->{functions}{default}}; +} + + +#------------------------------------------------------------- +# set back checks|functions values + +sub set_function { + my ($msec, $function, $value) = @_; + $msec->{functions}{value}{$function} = $value; +} + +sub set_check { + my ($msec, $check, $value) = @_; + $msec->{checks}{value}{$check} = $value; +} + + +#------------------------------------------------------------- +# apply configuration + +# config_(check|function)(check|function, value) - +# Apply the configuration to 'prefix'/etc/security/msec/security.conf||/etc/security/msec/level.local + +sub apply_functions { + my ($msec) = @_; + my @list = sort($msec->list_functions('system'), $msec->list_functions('network')); + touch($msec->{functions}{values_file}) if !-e $msec->{functions}{values_file}; + substInFile { + foreach my $function (@list) { s/^$function.*\n// } + if (eof) { + $_ .= join("\n", if_(!$_, ''), (map { + my $value = $msec->get_function_value($_); + if_($value ne 'default', "$_ ($value)"); + } @list), ""); + } + } $msec->{functions}{values_file}; +} + +sub apply_checks { + my ($msec) = @_; + my @list = sort $msec->raw_checks_list; + setVarsInSh($msec->{checks}{values_file}, + { + map { + my $value = $msec->get_check_value($_); + if_($value ne 'default', $_ => $value); + } @list + } + ); +} + +sub reload { + my ($msec) = @_; + require security::level; + my $num_level = security::level::get(); + $msec->{functions}{defaults_file} = "$::prefix/usr/share/msec/level.$num_level"; + $msec->{functions}{default} = { $msec->load_defaults('functions') }; +} + +sub new { + my ($type) = @_; + my $msec = bless {}, $type; + + $msec->{functions}{values_file} = "$::prefix/etc/security/msec/level.local"; + $msec->{checks}{values_file} = "$::prefix/etc/security/msec/security.conf"; + $msec->{checks}{defaults_file} = "$::prefix/var/lib/msec/security.conf"; + $msec->{checks}{val_separator} = '='; + $msec->{functions}{val_separator} = '\('; + $msec->{checks}{def_separator} = '='; + $msec->{functions}{def_separator} = ' '; + $msec->reload; + + $msec->{checks}{default} = { $msec->load_defaults('checks') }; + $msec->{functions}{value} = { $msec->load_values('functions') }; + $msec->{checks}{value} = { $msec->load_values('checks') }; + $msec; +} + +1; diff --git a/perl-install/security/various.pm b/perl-install/security/various.pm new file mode 100644 index 000000000..0dfa21772 --- /dev/null +++ b/perl-install/security/various.pm @@ -0,0 +1,30 @@ +package security::various; # $Id: various.pm 22709 2005-05-27 05:37:24Z prigaux $ + +use diagnostics; +use strict; + +use common; + +sub config_libsafe { + my $setting = @_ > 1; + my ($prefix, $libsafe) = @_; + if ($setting) { + addVarsInSh("$prefix/etc/sysconfig/system", { LIBSAFE => bool2yesno($libsafe) }); + } else { + my %t = getVarsFromSh("$prefix/etc/sysconfig/system"); + text2bool($t{LIBSAFE}); + } +} + +sub config_security_user { + my $setting = @_ > 1; + my ($prefix, $sec_user) = @_; + if ($setting) { + addVarsInSh("$prefix/etc/security/msec/security.conf", { MAIL_USER => $sec_user }); + } else { + my %t = getVarsFromSh("$prefix/etc/security/msec/security.conf"); + $t{MAIL_USER}; + } +} + +1; |