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1 | #!/usr/bin/perl | |
2 | ############################################################################### | |
3 | # # | |
4 | # IPFire.org - A linux based firewall # | |
5 | # Copyright (C) 2007-2019 IPFire Team <info@ipfire.org> # | |
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 | |
25 | #use warnings; | |
26 | #use CGI::Carp 'fatalsToBrowser'; | |
27 | ||
28 | require '/var/ipfire/general-functions.pl'; | |
29 | require "${General::swroot}/lang.pl"; | |
30 | require "${General::swroot}/header.pl"; | |
31 | ||
32 | my %VULNERABILITIES = ( | |
33 | "itlb_multihit" => "$Lang::tr{'itlb multihit'} (CVE-2018-12207)", | |
34 | "l1tf" => "$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" => "$Lang::tr{'spectre variant 2'} (CVE-2017-5715)", | |
40 | "tsx_async_abort" => "$Lang::tr{'taa zombieload2'} (CVE-2019-11135)", | |
41 | ); | |
42 | ||
43 | my $errormessage = ""; | |
44 | my $notice = ""; | |
45 | ||
46 | my %mainsettings = (); | |
47 | my %color = (); | |
48 | &General::readhash("${General::swroot}/main/settings", \%mainsettings); | |
49 | &General::readhash("/srv/web/ipfire/html/themes/".$mainsettings{'THEME'}."/include/colors.txt", \%color); | |
50 | ||
51 | my %settings = ( | |
52 | "ENABLE_SMT" => "auto", | |
53 | ); | |
54 | &General::readhash("${General::swroot}/main/security", \%settings); | |
55 | ||
56 | &Header::showhttpheaders(); | |
57 | ||
58 | &Header::getcgihash(\%settings); | |
59 | ||
60 | if ($settings{'ACTION'} eq $Lang::tr{'save'}) { | |
61 | if ($settings{'ENABLE_SMT'} !~ /^(auto|on)$/) { | |
62 | $errormessage = $Lang::tr{'invalid input'}; | |
63 | } | |
64 | ||
65 | unless ($errormessage) { | |
66 | &General::writehash("${General::swroot}/main/security", \%settings); | |
67 | $notice = $Lang::tr{'please reboot to apply your changes'}; | |
68 | } | |
69 | } | |
70 | ||
71 | my %checked = (); | |
72 | $checked{'ENABLE_SMT'}{'auto'} = ''; | |
73 | $checked{'ENABLE_SMT'}{'on'} = ''; | |
74 | $checked{'ENABLE_SMT'}{$settings{'ENABLE_SMT'}} = "checked"; | |
75 | ||
76 | &Header::openpage($Lang::tr{'processor vulnerability mitigations'}, 1, ''); | |
77 | ||
78 | &Header::openbigbox("100%", "left", "", $errormessage); | |
79 | ||
80 | if ($errormessage) { | |
81 | &Header::openbox('100%', 'left', $Lang::tr{'error messages'}); | |
82 | print "<font color='red'>$errormessage</font>"; | |
83 | &Header::closebox(); | |
84 | } | |
85 | ||
86 | if ($notice) { | |
87 | &Header::openbox('100%', 'left', $Lang::tr{'notice'}); | |
88 | print "<font color='red'>$notice</font>"; | |
89 | &Header::closebox(); | |
90 | } | |
91 | ||
92 | &Header::openbox('100%', 'center', $Lang::tr{'processor vulnerability mitigations'}); | |
93 | ||
94 | print <<END; | |
95 | <table class="tbl" width='100%'> | |
96 | <thead> | |
97 | <tr> | |
98 | <th align="center"> | |
99 | <strong>$Lang::tr{'vulnerability'}</strong> | |
100 | </th> | |
101 | <th align="center"> | |
102 | <strong>$Lang::tr{'status'}</strong> | |
103 | </th> | |
104 | </tr> | |
105 | </thead> | |
106 | <tbody> | |
107 | END | |
108 | ||
109 | my $id = 0; | |
110 | for my $vuln (sort keys %VULNERABILITIES) { | |
111 | my ($status, $message) = &check_status($vuln); | |
112 | next if (!$status); | |
113 | ||
114 | my $colour = ""; | |
115 | my $bgcolour = ""; | |
116 | my $status_message = ""; | |
117 | ||
118 | # Not affected | |
119 | if ($status eq "Not affected") { | |
120 | $status_message = $Lang::tr{'not affected'}; | |
121 | $colour = "white"; | |
122 | $bgcolour = ${Header::colourgreen}; | |
123 | ||
124 | # Vulnerable | |
125 | } elsif ($status eq "Vulnerable") { | |
126 | $status_message = $Lang::tr{'vulnerable'}; | |
127 | $colour = "white"; | |
128 | $bgcolour = ${Header::colourred}; | |
129 | ||
130 | # Mitigated | |
131 | } elsif ($status eq "Mitigation") { | |
132 | $status_message = $Lang::tr{'mitigated'}; | |
133 | $colour = "white"; | |
134 | $bgcolour = ${Header::colourblue}; | |
135 | ||
136 | # Unknown report from kernel | |
137 | } else { | |
138 | $status_message = $status; | |
139 | $colour = "black"; | |
140 | $bgcolour = ${Header::colouryellow}; | |
141 | } | |
142 | ||
143 | my $table_colour = ($id++ % 2) ? $color{'color22'} : $color{'color20'}; | |
144 | ||
145 | print <<END; | |
146 | <tr bgcolor="$table_colour"> | |
147 | <td align="left"> | |
148 | <strong>$VULNERABILITIES{$vuln}</strong> | |
149 | </td> | |
150 | ||
151 | <td bgcolor="$bgcolour" align="center"> | |
152 | <font color="$colour"> | |
153 | END | |
154 | if ($message) { | |
155 | print "<strong>$status_message</strong> - $message"; | |
156 | } else { | |
157 | print "<strong>$status_message</strong>"; | |
158 | } | |
159 | ||
160 | print <<END; | |
161 | </font> | |
162 | </td> | |
163 | </tr> | |
164 | END | |
165 | } | |
166 | ||
167 | print <<END; | |
168 | </tbody> | |
169 | </table> | |
170 | END | |
171 | ||
172 | &Header::closebox(); | |
173 | ||
174 | print "<form method='post' action='$ENV{'SCRIPT_NAME'}'>\n"; | |
175 | ||
176 | &Header::openbox('100%', 'center', $Lang::tr{'settings'}); | |
177 | ||
178 | my $smt_status = &smt_status(); | |
179 | ||
180 | print <<END; | |
181 | <table class="tbl" width="66%"> | |
182 | <tbody> | |
183 | <tr> | |
184 | <th colspan="2" align="center"> | |
185 | <strong>$smt_status</strong> | |
186 | </th> | |
187 | </tr> | |
188 | ||
189 | <tr> | |
190 | <td width="50%" align="left"> | |
191 | $Lang::tr{'enable smt'} | |
192 | </td> | |
193 | ||
194 | <td width="50%" align="center"> | |
195 | <label> | |
196 | <input type="radio" name="ENABLE_SMT" | |
197 | value="auto" $checked{'ENABLE_SMT'}{'auto'}> | |
198 | $Lang::tr{'automatic'} | |
199 | </label> / | |
200 | <label> | |
201 | <input type="radio" name="ENABLE_SMT" | |
202 | value="on" $checked{'ENABLE_SMT'}{'on'}> | |
203 | $Lang::tr{'force enable'} ($Lang::tr{'dangerous'}) | |
204 | </label> | |
205 | </td> | |
206 | </tr> | |
207 | ||
208 | <tr> | |
209 | <td colspan="2" align="right"> | |
210 | <input type="submit" name="ACTION" value="$Lang::tr{'save'}"> | |
211 | </td> | |
212 | </tr> | |
213 | </tbody> | |
214 | </table> | |
215 | END | |
216 | ||
217 | &Header::closebox(); | |
218 | ||
219 | print "</form>\n"; | |
220 | ||
221 | &Header::closebigbox(); | |
222 | ||
223 | &Header::closepage(); | |
224 | ||
225 | sub check_status($) { | |
226 | my $vuln = shift; | |
227 | ||
228 | open(FILE, "/sys/devices/system/cpu/vulnerabilities/$vuln") or return undef; | |
229 | my $status = <FILE>; | |
230 | close(FILE); | |
231 | ||
232 | chomp($status); | |
233 | ||
234 | # Fix status when something has been mitigated, but not fully, yet | |
235 | if ($status =~ /^(Mitigation): (.*vulnerable.*)$/) { | |
236 | return ("Vulnerable", $status); | |
237 | } | |
238 | ||
239 | if ($status =~ /^(Vulnerable|Mitigation): (.*)$/) { | |
240 | return ($1, $2); | |
241 | } | |
242 | ||
243 | return $status; | |
244 | } | |
245 | ||
246 | sub smt_status() { | |
247 | open(FILE, "/sys/devices/system/cpu/smt/control"); | |
248 | my $status = <FILE>; | |
249 | close(FILE); | |
250 | ||
251 | chomp($status); | |
252 | ||
253 | if ($status eq "on") { | |
254 | return $Lang::tr{'smt enabled'}; | |
255 | } elsif (($status eq "off") || ($status eq "forceoff")) { | |
256 | return $Lang::tr{'smt disabled'}; | |
257 | } elsif ($status eq "notsupported") { | |
258 | return $Lang::tr{'smt not supported'}; | |
259 | } | |
260 | ||
261 | return $status; | |
262 | } |