1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
|
#!/usr/bin/python -O
#---------------------------------------------------------------
# Project : Mandrake Linux
# Module : msec/share
# File : msec.py
# Version : $Id$
# Author : Frederic Lepied
# Created On : Wed Dec 5 20:20:21 2001
#---------------------------------------------------------------
from mseclib import *
from Log import *
from Log import _name
import Config
import ConfigFile
import sys
import os
import string
import getopt
import gettext
import imp
try:
cat = gettext.Catalog('msec')
_ = cat.gettext
except IOError:
_ = str
# Eval a file
def eval_file(name):
file = os.fdopen(os.open(os.path.expanduser(name), os.O_RDONLY))
imp.load_source('', name, file)
file.close()
# program
_name = 'msec'
sys.argv[0] = os.path.basename(sys.argv[0])
try:
(opt, args) = getopt.getopt(sys.argv[1:], 'o:',
['option'])
except getopt.error:
error(_('Invalid option. Use %s (-o var=<val>...) ([0-5])') % _name)
sys.exit(1)
for o in opt:
if o[0] == '-o' or o[0] == '--option':
pair = string.split(o[1], '=')
if len(pair) != 2:
error(_('Invalid option format %s %s: use -o var=<val>') % (o[0], o[1]))
sys.exit(1)
else:
Config.set_config(pair[0], pair[1])
interactive = sys.stdin.isatty()
set_interactive(interactive)
# initlog must be done after processing the option because we can change
# the way to report log with options...
if interactive:
import syslog
initlog('msec', syslog.LOG_LOCAL1)
else:
initlog('msec')
if len(args) == 0:
level = get_secure_level()
if level == None:
error(_('Secure level not set. Use %s <secure level> to set it.') % _msec)
sys.exit(1)
else:
level = args[0]
try:
level = int(level)
except ValueError:
error(_('Invalid secure level %s. Use %s [0-5] to set it.') % (level, _msec))
sys.exit(1)
if level < 0 or level > 5:
error(_('Invalid secure level %s. Use %s [0-5] to set it.') % (level, _msec))
sys.exit(1)
interactive and log(_('### Program is starting ###'))
set_secure_level(level)
server=(level in range(3, 6))
# for all levels: min length = 2 * (level - 1) and for level 4,5 makes mandatory
# to have at least one upper case character and one digit.
if level > 1:
plength = (level - 1) * 2
else:
plength = 0
password_length(plength, level / 4, level / 4)
enable_ip_spoofing_protection(server)
# differences between level 5 and others
if level == 5:
set_root_umask('077')
set_shell_timeout(900)
authorize_services(NONE)
enable_pam_wheel_for_su(1)
else:
set_root_umask('022')
if level == 4:
set_shell_timeout(3600)
authorize_services(LOCAL)
else:
set_shell_timeout(0)
authorize_services(ALL)
enable_pam_wheel_for_su(0)
# differences between level 4,5 and others
if level >= 4:
set_user_umask('077')
set_shell_history_size(10)
allow_root_login(0)
enable_sulogin(1)
allow_user_list(0)
enable_promisc_check(1)
accept_icmp_echo(0)
accept_bogus_error_responses(0)
enable_libsafe(1)
allow_reboot(0)
enable_at_crontab(0)
if level == 4:
password_aging(60)
else:
password_aging(30)
else:
set_user_umask('022')
set_shell_history_size(-1)
allow_root_login(1)
enable_sulogin(0)
allow_user_list(1)
enable_promisc_check(0)
accept_icmp_echo(1)
accept_bogus_error_responses(1)
enable_libsafe(0)
allow_reboot(1)
enable_at_crontab(1)
password_aging(99999)
# differences between level 3,4,5 and others
if server:
allow_autologin(0)
enable_console_log(1)
if level == 5:
allow_issues(NONE)
else:
allow_issues(LOCAL)
enable_log_strange_packets(1)
else:
allow_autologin(1)
enable_console_log(0)
allow_issues(ALL)
enable_log_strange_packets(0)
# differences between level 0 and others
if level != 0:
enable_security_check(1)
if level < 3:
allow_x_connections(LOCAL)
else:
allow_x_connections(NONE)
else:
enable_security_check(0)
allow_x_connections(ALL)
# msec cron
enable_msec_cron(1)
# TODO: need to be rewritten because we need to use fakelibmsec instead
# of calling directly the low level functions
# 0 1 2 3 4 5
FILE_CHECKS = {'CHECK_SECURITY' : ('no', 'yes', 'yes', 'yes', 'yes', 'yes', ),
'CHECK_PERMS' : ('no', 'no', 'no', 'yes', 'yes', 'yes', ),
'CHECK_SUID_ROOT' : ('no', 'no', 'yes', 'yes', 'yes', 'yes', ),
'CHECK_SUID_MD5' : ('no', 'no', 'yes', 'yes', 'yes', 'yes', ),
'CHECK_SUID_GROUP' : ('no', 'no', 'yes', 'yes', 'yes', 'yes', ),
'CHECK_WRITEABLE' : ('no', 'no', 'yes', 'yes', 'yes', 'yes', ),
'CHECK_UNOWNED' : ('no', 'no', 'no', 'no', 'yes', 'yes', ),
'CHECK_PROMISC' : ('no', 'no', 'no', 'no', 'yes', 'yes', ),
'CHECK_OPEN_PORT' : ('no', 'no', 'no', 'yes', 'yes', 'yes', ),
'CHECK_PASSWD' : ('no', 'no', 'no', 'yes', 'yes', 'yes', ),
'CHECK_SHADOW' : ('no', 'no', 'no', 'yes', 'yes', 'yes', ),
'TTY_WARN' : ('no', 'no', 'no', 'no', 'yes', 'yes', ),
'MAIL_WARN' : ('no', 'no', 'no', 'yes', 'yes', 'yes', ),
'SYSLOG_WARN' : ('no', 'no', 'yes', 'yes', 'yes', 'yes', ),
'RPM_CHECK' : ('no', 'no', 'no', 'yes', 'yes', 'yes', ),
'CHKROOTKIT_CHECK' : ('no', 'no', 'no', 'yes', 'yes', 'yes', ),
}
for k in FILE_CHECKS.keys():
set_security_conf(k, FILE_CHECKS[k][level])
# load local customizations
CONFIG='/etc/security/msec/level.local'
if os.path.exists(CONFIG):
try:
eval_file(CONFIG)
except:
log(_('Error loading %s: %s') % (CONFIG, sys.exc_value[0]))
commit_changes()
interactive and log(_('Writing config files and then taking needed actions'))
ConfigFile.write_files()
closelog()
# msec.py ends here
|
