blob: 7c51395799fb16ed5d86927d89fce4f225ef4da7 (
plain)
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
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
|
#!/bin/bash
LCK=/var/run/msec-security.pid
function cleanup() {
rm -f $LCK
}
if [ -f $LCK ]; then
if [ -d /proc/`cat $LCK` ]; then
exit 0
else
rm -f $LCK
fi
fi
echo -n $$ > $LCK
trap cleanup 0
if [[ ! -f /var/lib/msec/security.conf ]]; then
echo "Can't access /var/lib/msec/security.conf."
exit 1
fi
. /var/lib/msec/security.conf
if [ -r /etc/security/msec/security.conf ]; then
. /etc/security/msec/security.conf
fi
if [ -r /etc/sysconfig/msec ]; then
. /etc/sysconfig/msec
fi
umask ${UMASK_ROOT=077}
[[ ${MAIL_WARN} == yes ]] && [ -z ${MAIL_USER} ] && MAIL_USER="root"
export SUID_ROOT_TODAY="/var/log/security/suid_root.today"
SUID_ROOT_YESTERDAY="/var/log/security/suid_root.yesterday"
SUID_ROOT_DIFF="/var/log/security/suid_root.diff"
export SUID_GROUP_TODAY="/var/log/security/suid_group.today"
SUID_GROUP_YESTERDAY="/var/log/security/suid_group.yesterday"
SUID_GROUP_DIFF="/var/log/security/suid_group.diff"
export SUID_MD5_TODAY="/var/log/security/suid_md5.today"
SUID_MD5_YESTERDAY="/var/log/security/suid_md5.yesterday"
SUID_MD5_DIFF="/var/log/security/suid_md5.diff"
export OPEN_PORT_TODAY="/var/log/security/open_port.today"
OPEN_PORT_YESTERDAY="/var/log/security/open_port.yesterday"
OPEN_PORT_DIFF="/var/log/security/open_port.diff"
export WRITABLE_TODAY="/var/log/security/writable.today"
WRITABLE_YESTERDAY="/var/log/security/writable.yesterday"
WRITABLE_DIFF="/var/log/security/writable.diff"
export UNOWNED_USER_TODAY="/var/log/security/unowned_user.today"
UNOWNED_USER_YESTERDAY="/var/log/security/unowned_user.yesterday"
UNOWNED_USER_DIFF="/var/log/security/unowned_user.diff"
export UNOWNED_GROUP_TODAY="/var/log/security/unowned_group.today"
UNOWNED_GROUP_YESTERDAY="/var/log/security/unowned_group.yesterday"
UNOWNED_GROUP_DIFF="/var/log/security/unowned_group.diff"
export RPM_VA_TODAY="/var/log/security/rpm-va.today"
RPM_VA_YESTERDAY="/var/log/security/rpm-va.yesterday"
RPM_VA_DIFF="/var/log/security/rpm-va.diff"
export RPM_VA_CONFIG_TODAY="/var/log/security/rpm-va-config.today"
RPM_VA_CONFIG_YESTERDAY="/var/log/security/rpm-va-config.yesterday"
RPM_VA_CONFIG_DIFF="/var/log/security/rpm-va-config.diff"
export RPM_QA_TODAY="/var/log/security/rpm-qa.today"
RPM_QA_YESTERDAY="/var/log/security/rpm-qa.yesterday"
RPM_QA_DIFF="/var/log/security/rpm-qa.diff"
export CHKROOTKIT_TODAY="/var/log/security/chkrootkit.today"
CHKROOTKIT_YESTERDAY="/var/log/security/chkrootkit.yesterday"
# Modified filters coming from debian security scripts.
CS_NFSAFS='(nfs|afs|xfs|coda)'
CS_TYPES=' type (devpts|auto|proc|msdos|fat|vfat|iso9660|ncpfs|smbfs|'$CS_NFSAFS')'
CS_DEVS='^/dev/fd'
CS_DIRS='on /mnt'
FILTERS="$CS_TYPES|$CS_DEVS|$CS_DIRS"
DIR=`mount | grep -vE "$FILTERS" | cut -d ' ' -f3`
PRINT="%h/%f\n"
if [[ ! -d /var/log/security ]]; then
mkdir /var/log/security
fi
if [[ -f ${SUID_ROOT_TODAY} ]]; then
mv ${SUID_ROOT_TODAY} ${SUID_ROOT_YESTERDAY};
fi
if [[ -f ${SUID_GROUP_TODAY} ]]; then
mv ${SUID_GROUP_TODAY} ${SUID_GROUP_YESTERDAY};
fi
if [[ -f ${WRITABLE_TODAY} ]]; then
mv ${WRITABLE_TODAY} ${WRITABLE_YESTERDAY};
fi
if [[ -f ${UNOWNED_USER_TODAY} ]]; then
mv ${UNOWNED_USER_TODAY} ${UNOWNED_USER_YESTERDAY};
fi
if [[ -f ${UNOWNED_GROUP_TODAY} ]]; then
mv ${UNOWNED_GROUP_TODAY} ${UNOWNED_GROUP_YESTERDAY};
fi
if [[ -f ${OPEN_PORT_TODAY} ]]; then
mv -f ${OPEN_PORT_TODAY} ${OPEN_PORT_YESTERDAY}
fi
if [[ -f ${SUID_MD5_TODAY} ]]; then
mv ${SUID_MD5_TODAY} ${SUID_MD5_YESTERDAY};
fi
if [[ -f ${RPM_VA_TODAY} ]]; then
mv -f ${RPM_VA_TODAY} ${RPM_VA_YESTERDAY}
fi
if [[ -f ${RPM_VA_CONFIG_TODAY} ]]; then
mv -f ${RPM_VA_CONFIG_TODAY} ${RPM_VA_CONFIG_YESTERDAY}
fi
if [[ -f ${RPM_QA_TODAY} ]]; then
mv -f ${RPM_QA_TODAY} ${RPM_QA_YESTERDAY}
fi
if [[ -f ${CHKROOTKIT_TODAY} ]]; then
mv -f ${CHKROOTKIT_TODAY} ${CHKROOTKIT_YESTERDAY}
fi
netstat -pvlA inet 2> /dev/null > ${OPEN_PORT_TODAY};
# Hard disk related file check; the less priority the better...
nice --adjustment=+19 /usr/bin/msec_find ${DIR}
if [[ -f ${SUID_ROOT_TODAY} ]]; then
sort < ${SUID_ROOT_TODAY} > ${SUID_ROOT_TODAY}.tmp
mv -f ${SUID_ROOT_TODAY}.tmp ${SUID_ROOT_TODAY}
fi
if [[ -f ${SUID_GROUP_TODAY} ]]; then
sort < ${SUID_GROUP_TODAY} > ${SUID_GROUP_TODAY}.tmp
mv -f ${SUID_GROUP_TODAY}.tmp ${SUID_GROUP_TODAY}
fi
if [[ -f ${WRITABLE_TODAY} ]]; then
sort < ${WRITABLE_TODAY} | egrep -v '^(/var)?/tmp$' > ${WRITABLE_TODAY}.tmp
mv -f ${WRITABLE_TODAY}.tmp ${WRITABLE_TODAY}
fi
if [[ -f ${UNOWNED_USER_TODAY} ]]; then
sort < ${UNOWNED_USER_TODAY} > ${UNOWNED_USER_TODAY}.tmp
mv -f ${UNOWNED_USER_TODAY}.tmp ${UNOWNED_USER_TODAY}
fi
if [[ -f ${UNOWNED_GROUP_TODAY} ]]; then
sort < ${UNOWNED_GROUP_TODAY} > ${UNOWNED_GROUP_TODAY}.tmp
mv -f ${UNOWNED_GROUP_TODAY}.tmp ${UNOWNED_GROUP_TODAY}
fi
if [[ -f ${SUID_ROOT_TODAY} ]]; then
while read line; do
md5sum ${line}
done < ${SUID_ROOT_TODAY} > ${SUID_MD5_TODAY}
fi
### rpm database check
if [[ ${RPM_CHECK} == yes ]]; then
rpm -qa --qf "%{NAME}-%{VERSION}-%{RELEASE}\t%{INSTALLTIME}\n" | sort > ${RPM_QA_TODAY}
rm -f ${RPM_VA_TODAY}.tmp
nice --adjustment=+19 rpm -V `cut -f 1 < ${RPM_QA_TODAY} | grep -v '^dev-[0-9]'` | grep '^..5' | sort > ${RPM_VA_TODAY}.tmp
grep -v '^.........c.' ${RPM_VA_TODAY}.tmp | sed 's/^...........//' | sort > ${RPM_VA_TODAY}
grep '^.........c.' ${RPM_VA_TODAY}.tmp | sed 's/^...........//' | sort > ${RPM_VA_CONFIG_TODAY}
rm -f ${RPM_VA_TODAY}.tmp
fi
### chkrootkit checks
if [[ ${CHKROOTKIT_CHECK} == yes ]]; then
if [ -x /usr/sbin/chkrootkit ]; then
/usr/sbin/chkrootkit > ${CHKROOTKIT_TODAY}
fi
fi
### Functions ###
Syslog() {
if [[ ${SYSLOG_WARN} == yes ]]; then
while read line; do
/sbin/initlog --string="${line}"
done < ${1}
fi
}
Ttylog() {
if [[ ${TTY_WARN} == yes ]]; then
for i in `w | grep -v "load\|TTY" | grep '^root' | awk '{print $2}'` ; do
cat ${1} > /dev/$i
done
fi
}
Maillog() {
subject=${1}
text=${2}
SOMETHING_TO_SEND=
if [[ ${MAIL_WARN} == yes ]]; then
if [[ -z ${MAIL_USER} ]]; then
MAIL_USER="root"
fi
if [[ -x /bin/mail ]]; then
for f in ${text}; do
if [[ -s $f ]]; then
SOMETHING_TO_SEND=1
break
fi
done
if [[ -z ${SOMETHING_TO_SEND} ]]; then
if [[ ${MAIL_EMPTY_CONTENT} != no ]]; then
/bin/mail -s "${subject}" "${MAIL_USER}" <<EOF
Nothing has changed since the last run.
EOF
fi
else
cat ${text} | /bin/mail -s "${subject}" "${MAIL_USER}"
fi
fi
fi
}
##################
. /usr/share/msec/diff_check.sh
. /usr/share/msec/security_check.sh
|
