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1 | #!/usr/bin/perl |
2 | ############################################################################### | |
3 | # # | |
4 | # IPFire.org - A linux based firewall # | |
e9c62e37 | 5 | # Copyright (C) 2007-2020 IPFire Team <info@ipfire.org> # |
65871d1a MT |
6 | # # |
7 | # This program is free software: you can redistribute it and/or modify # | |
8 | # it under the terms of the GNU General Public License as published by # | |
9 | # the Free Software Foundation, either version 3 of the License, or # | |
10 | # (at your option) any later version. # | |
11 | # # | |
12 | # This program is distributed in the hope that it will be useful, # | |
13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of # | |
14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # | |
15 | # GNU General Public License for more details. # | |
16 | # # | |
17 | # You should have received a copy of the GNU General Public License # | |
18 | # along with this program. If not, see <http://www.gnu.org/licenses/>. # | |
19 | # # | |
20 | ############################################################################### | |
21 | ||
22 | use strict; | |
23 | ||
24 | # enable only the following on debugging purpose | |
f238e251 MT |
25 | #use warnings; |
26 | #use CGI::Carp 'fatalsToBrowser'; | |
65871d1a MT |
27 | |
28 | require '/var/ipfire/general-functions.pl'; | |
29 | require "${General::swroot}/lang.pl"; | |
30 | require "${General::swroot}/header.pl"; | |
31 | ||
32 | my %VULNERABILITIES = ( | |
6fb52ca1 | 33 | "itlb_multihit" => "$Lang::tr{'itlb multihit'} (CVE-2018-12207)", |
65871d1a MT |
34 | "l1tf" => "$Lang::tr{'foreshadow'} (CVE-2018-3620)", |
35 | "mds" => "$Lang::tr{'fallout zombieload ridl'} (CVE-2018-12126, CVE-2018-12130, CVE-2018-12127, CVE-2019-11091)", | |
36 | "meltdown" => "$Lang::tr{'meltdown'} (CVE-2017-5754)", | |
37 | "spec_store_bypass" => "$Lang::tr{'spectre variant 4'} (CVE-2018-3639)", | |
38 | "spectre_v1" => "$Lang::tr{'spectre variant 1'} (CVE-2017-5753)", | |
39 | "spectre_v2" => "$Lang::tr{'spectre variant 2'} (CVE-2017-5715)", | |
e9c62e37 | 40 | "srbds" => "$Lang::tr{'srbds'} (CVE-2020-0543)", |
6fb52ca1 | 41 | "tsx_async_abort" => "$Lang::tr{'taa zombieload2'} (CVE-2019-11135)", |
65871d1a MT |
42 | ); |
43 | ||
44 | my $errormessage = ""; | |
45 | my $notice = ""; | |
46 | ||
47 | my %mainsettings = (); | |
48 | my %color = (); | |
49 | &General::readhash("${General::swroot}/main/settings", \%mainsettings); | |
50 | &General::readhash("/srv/web/ipfire/html/themes/".$mainsettings{'THEME'}."/include/colors.txt", \%color); | |
51 | ||
52 | my %settings = ( | |
53 | "ENABLE_SMT" => "auto", | |
54 | ); | |
55 | &General::readhash("${General::swroot}/main/security", \%settings); | |
56 | ||
57 | &Header::showhttpheaders(); | |
58 | ||
59 | &Header::getcgihash(\%settings); | |
60 | ||
61 | if ($settings{'ACTION'} eq $Lang::tr{'save'}) { | |
62 | if ($settings{'ENABLE_SMT'} !~ /^(auto|on)$/) { | |
63 | $errormessage = $Lang::tr{'invalid input'}; | |
64 | } | |
65 | ||
66 | unless ($errormessage) { | |
67 | &General::writehash("${General::swroot}/main/security", \%settings); | |
68 | $notice = $Lang::tr{'please reboot to apply your changes'}; | |
69 | } | |
70 | } | |
71 | ||
72 | my %checked = (); | |
73 | $checked{'ENABLE_SMT'}{'auto'} = ''; | |
74 | $checked{'ENABLE_SMT'}{'on'} = ''; | |
75 | $checked{'ENABLE_SMT'}{$settings{'ENABLE_SMT'}} = "checked"; | |
76 | ||
77 | &Header::openpage($Lang::tr{'processor vulnerability mitigations'}, 1, ''); | |
78 | ||
79 | &Header::openbigbox("100%", "left", "", $errormessage); | |
80 | ||
81 | if ($errormessage) { | |
82 | &Header::openbox('100%', 'left', $Lang::tr{'error messages'}); | |
83 | print "<font color='red'>$errormessage</font>"; | |
84 | &Header::closebox(); | |
85 | } | |
86 | ||
87 | if ($notice) { | |
88 | &Header::openbox('100%', 'left', $Lang::tr{'notice'}); | |
89 | print "<font color='red'>$notice</font>"; | |
90 | &Header::closebox(); | |
91 | } | |
92 | ||
93 | &Header::openbox('100%', 'center', $Lang::tr{'processor vulnerability mitigations'}); | |
94 | ||
95 | print <<END; | |
96 | <table class="tbl" width='100%'> | |
97 | <thead> | |
98 | <tr> | |
99 | <th align="center"> | |
100 | <strong>$Lang::tr{'vulnerability'}</strong> | |
101 | </th> | |
102 | <th align="center"> | |
103 | <strong>$Lang::tr{'status'}</strong> | |
104 | </th> | |
105 | </tr> | |
106 | </thead> | |
107 | <tbody> | |
108 | END | |
109 | ||
110 | my $id = 0; | |
111 | for my $vuln (sort keys %VULNERABILITIES) { | |
112 | my ($status, $message) = &check_status($vuln); | |
113 | next if (!$status); | |
114 | ||
115 | my $colour = ""; | |
116 | my $bgcolour = ""; | |
117 | my $status_message = ""; | |
118 | ||
119 | # Not affected | |
120 | if ($status eq "Not affected") { | |
121 | $status_message = $Lang::tr{'not affected'}; | |
122 | $colour = "white"; | |
29abc2d0 | 123 | $bgcolour = ${Header::colourgreen}; |
65871d1a MT |
124 | |
125 | # Vulnerable | |
126 | } elsif ($status eq "Vulnerable") { | |
127 | $status_message = $Lang::tr{'vulnerable'}; | |
128 | $colour = "white"; | |
129 | $bgcolour = ${Header::colourred}; | |
130 | ||
131 | # Mitigated | |
132 | } elsif ($status eq "Mitigation") { | |
133 | $status_message = $Lang::tr{'mitigated'}; | |
984a6cab | 134 | $colour = "white"; |
29abc2d0 | 135 | $bgcolour = ${Header::colourblue}; |
65871d1a | 136 | |
984a6cab | 137 | # Unknown report from kernel |
65871d1a | 138 | } else { |
b23db9b9 | 139 | $status_message = $status; |
984a6cab AF |
140 | $colour = "black"; |
141 | $bgcolour = ${Header::colouryellow}; | |
65871d1a MT |
142 | } |
143 | ||
144 | my $table_colour = ($id++ % 2) ? $color{'color22'} : $color{'color20'}; | |
145 | ||
146 | print <<END; | |
147 | <tr bgcolor="$table_colour"> | |
148 | <td align="left"> | |
149 | <strong>$VULNERABILITIES{$vuln}</strong> | |
150 | </td> | |
151 | ||
152 | <td bgcolor="$bgcolour" align="center"> | |
153 | <font color="$colour"> | |
154 | END | |
155 | if ($message) { | |
e896a9bd | 156 | print "<strong>$status_message</strong> - $message"; |
65871d1a MT |
157 | } else { |
158 | print "<strong>$status_message</strong>"; | |
159 | } | |
160 | ||
161 | print <<END; | |
162 | </font> | |
163 | </td> | |
164 | </tr> | |
165 | END | |
166 | } | |
167 | ||
168 | print <<END; | |
169 | </tbody> | |
170 | </table> | |
171 | END | |
172 | ||
173 | &Header::closebox(); | |
174 | ||
175 | print "<form method='post' action='$ENV{'SCRIPT_NAME'}'>\n"; | |
176 | ||
177 | &Header::openbox('100%', 'center', $Lang::tr{'settings'}); | |
178 | ||
1cbcd044 MT |
179 | my $smt_status = &smt_status(); |
180 | ||
65871d1a MT |
181 | print <<END; |
182 | <table class="tbl" width="66%"> | |
183 | <tbody> | |
1cbcd044 MT |
184 | <tr> |
185 | <th colspan="2" align="center"> | |
186 | <strong>$smt_status</strong> | |
187 | </th> | |
188 | </tr> | |
189 | ||
65871d1a MT |
190 | <tr> |
191 | <td width="50%" align="left"> | |
1cbcd044 | 192 | $Lang::tr{'enable smt'} |
65871d1a MT |
193 | </td> |
194 | ||
195 | <td width="50%" align="center"> | |
196 | <label> | |
197 | <input type="radio" name="ENABLE_SMT" | |
198 | value="auto" $checked{'ENABLE_SMT'}{'auto'}> | |
199 | $Lang::tr{'automatic'} | |
200 | </label> / | |
201 | <label> | |
202 | <input type="radio" name="ENABLE_SMT" | |
203 | value="on" $checked{'ENABLE_SMT'}{'on'}> | |
204 | $Lang::tr{'force enable'} ($Lang::tr{'dangerous'}) | |
205 | </label> | |
206 | </td> | |
207 | </tr> | |
208 | ||
209 | <tr> | |
210 | <td colspan="2" align="right"> | |
211 | <input type="submit" name="ACTION" value="$Lang::tr{'save'}"> | |
212 | </td> | |
213 | </tr> | |
214 | </tbody> | |
215 | </table> | |
216 | END | |
217 | ||
218 | &Header::closebox(); | |
219 | ||
220 | print "</form>\n"; | |
221 | ||
222 | &Header::closebigbox(); | |
223 | ||
224 | &Header::closepage(); | |
225 | ||
226 | sub check_status($) { | |
227 | my $vuln = shift; | |
228 | ||
229 | open(FILE, "/sys/devices/system/cpu/vulnerabilities/$vuln") or return undef; | |
230 | my $status = <FILE>; | |
231 | close(FILE); | |
232 | ||
e896a9bd AF |
233 | chomp($status); |
234 | ||
413f84e9 | 235 | # Fix status when something has been mitigated, but not fully, yet |
b23db9b9 | 236 | if ($status =~ /^(Mitigation): (.*vulnerable.*)$/) { |
e896a9bd | 237 | return ("Vulnerable", $status); |
b23db9b9 AF |
238 | } |
239 | ||
a96bcf41 | 240 | if ($status =~ /^(Vulnerable|Mitigation): (.*)$/) { |
65871d1a MT |
241 | return ($1, $2); |
242 | } | |
243 | ||
244 | return $status; | |
245 | } | |
1cbcd044 MT |
246 | |
247 | sub smt_status() { | |
248 | open(FILE, "/sys/devices/system/cpu/smt/control"); | |
249 | my $status = <FILE>; | |
250 | close(FILE); | |
251 | ||
252 | chomp($status); | |
253 | ||
254 | if ($status eq "on") { | |
255 | return $Lang::tr{'smt enabled'}; | |
256 | } elsif (($status eq "off") || ($status eq "forceoff")) { | |
257 | return $Lang::tr{'smt disabled'}; | |
258 | } elsif ($status eq "notsupported") { | |
259 | return $Lang::tr{'smt not supported'}; | |
260 | } | |
261 | ||
262 | return $status; | |
263 | } |