[1/3] Initial infrastructure for SSL root bundle in base
This setup will add the trusted certificates from the Mozilla NSS bundle to base. This commit includes: - CAROOT option to opt out of installation of certs - mtree amendments for final destinations - infrastructure to fetch/update certs, along with instructions A follow-up commit will add a certctl(8) utility to give the user control over trust specifics. Another follow-up commit will actually commit the initial result of updatecerts. This work was done primarily by allanjude@, with minor contributions by myself. No objection from: secteam Relnotes: yes Differential Revision: https://reviews.freebsd.org/D16856
This commit is contained in:
Kyle Evans
parent
150c95edfe
commit
f27f39db77
@ -194,6 +194,12 @@
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uk_UA.KOI8-U
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..
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..
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certs
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blacklisted
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..
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trusted
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..
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..
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dict
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..
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doc
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@ -8,6 +8,8 @@ SUBDIR_PARALLEL=
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SUBDIR.${MK_TESTS}+= tests
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SUBDIR.${MK_CAROOT}+= caroot
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# These are the programs which depend on crypto, but not Kerberos.
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SPROGS= lib/libfetch lib/libpam lib/libradius lib/libtelnet \
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bin/ed libexec/telnetd usr.bin/fetch usr.bin/telnet \
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272
secure/caroot/MAca-bundle.pl
Executable file
272
secure/caroot/MAca-bundle.pl
Executable file
@ -0,0 +1,272 @@
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#!/usr/bin/env perl
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##
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## MAca-bundle.pl -- Regenerate ca-root-nss.crt from the Mozilla certdata.txt
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##
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## Rewritten in September 2011 by Matthias Andree to heed untrust
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##
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## Copyright (c) 2011, 2013 Matthias Andree <mandree@FreeBSD.org>
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## All rights reserved.
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## Copyright (c) 2018, Allan Jude <allanjude@FreeBSD.org>
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##
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## Redistribution and use in source and binary forms, with or without
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## modification, are permitted provided that the following conditions are
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## met:
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##
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## * Redistributions of source code must retain the above copyright
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## notice, this list of conditions and the following disclaimer.
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##
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## * Redistributions in binary form must reproduce the above copyright
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## notice, this list of conditions and the following disclaimer in the
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## documentation and/or other materials provided with the distribution.
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##
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## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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## FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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## COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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## INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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## BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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## LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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## CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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## LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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## ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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## POSSIBILITY OF SUCH DAMAGE.
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use strict;
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use Carp;
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use MIME::Base64;
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use Getopt::Long;
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my $VERSION = '$FreeBSD$';
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my $inputfh = *STDIN;
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my $debug = 0;
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my $infile;
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my $outputdir;
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my %labels;
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my %certs;
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my %trusts;
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$debug++
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if defined $ENV{'WITH_DEBUG'}
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and $ENV{'WITH_DEBUG'} !~ m/(?i)^(no|0|false|)$/;
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GetOptions (
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"debug+" => \$debug,
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"infile:s" => \$infile,
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"outputdir:s" => \$outputdir)
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or die("Error in command line arguments\n$0 [-d] [-i input-file] [-o output-dir]\n");
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if ($infile) {
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open($inputfh, "<", $infile) or die "Failed to open $infile";
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}
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sub print_header($$)
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{
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my $dstfile = shift;
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my $label = shift;
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if ($outputdir) {
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print $dstfile <<EOFH;
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##
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## $label
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##
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## This is a single X.509 certificate for a public Certificate
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## Authority (CA). It was automatically extracted from Mozilla's
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## root CA list (the file `certdata.txt' in security/nss).
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##
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## Extracted from nss
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## with $VERSION
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##
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EOFH
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} else {
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print $dstfile <<EOH;
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##
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## ca-root-nss.crt -- Bundle of CA Root Certificates
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##
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## This is a bundle of X.509 certificates of public Certificate
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## Authorities (CA). These were automatically extracted from Mozilla's
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## root CA list (the file `certdata.txt').
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##
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## Extracted from nss
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## with $VERSION
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##
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EOH
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}
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}
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sub printcert($$$)
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{
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my ($fh, $label, $certdata) = @_;
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return unless $certdata;
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open(OUT, "|openssl x509 -text -inform DER -fingerprint")
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or die "could not pipe to openssl x509";
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print OUT $certdata;
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close(OUT) or die "openssl x509 failed with exit code $?";
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}
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sub graboct($)
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{
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my $ifh = shift;
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my $data;
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while (<$ifh>) {
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last if /^END/;
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my (undef,@oct) = split /\\/;
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my @bin = map(chr(oct), @oct);
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$data .= join('', @bin);
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}
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return $data;
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}
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sub grabcert($)
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{
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my $ifh = shift;
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my $certdata;
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my $cka_label;
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my $serial;
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while (<$ifh>) {
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chomp;
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last if ($_ eq '');
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if (/^CKA_LABEL UTF8 "([^"]+)"/) {
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$cka_label = $1;
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}
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if (/^CKA_VALUE MULTILINE_OCTAL/) {
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$certdata = graboct($ifh);
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}
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if (/^CKA_SERIAL_NUMBER MULTILINE_OCTAL/) {
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$serial = graboct($ifh);
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}
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}
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return ($serial, $cka_label, $certdata);
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}
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sub grabtrust($) {
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my $ifh = shift;
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my $cka_label;
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my $serial;
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my $maytrust = 0;
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my $distrust = 0;
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while (<$ifh>) {
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chomp;
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last if ($_ eq '');
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if (/^CKA_LABEL UTF8 "([^"]+)"/) {
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$cka_label = $1;
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}
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if (/^CKA_SERIAL_NUMBER MULTILINE_OCTAL/) {
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$serial = graboct($ifh);
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}
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if (/^CKA_TRUST_(SERVER_AUTH|EMAIL_PROTECTION|CODE_SIGNING) CK_TRUST (\S+)$/)
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{
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if ($2 eq 'CKT_NSS_NOT_TRUSTED') {
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$distrust = 1;
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} elsif ($2 eq 'CKT_NSS_TRUSTED_DELEGATOR') {
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$maytrust = 1;
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} elsif ($2 ne 'CKT_NSS_MUST_VERIFY_TRUST') {
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confess "Unknown trust setting on line $.:\n"
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. "$_\n"
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. "Script must be updated:";
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}
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}
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}
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if (!$maytrust && !$distrust && $debug) {
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print STDERR "line $.: no explicit trust/distrust found for $cka_label\n";
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}
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my $trust = ($maytrust and not $distrust);
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return ($serial, $cka_label, $trust);
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}
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if (!$outputdir) {
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print_header(*STDOUT, "");
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}
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while (<$inputfh>) {
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if (/^CKA_CLASS CK_OBJECT_CLASS CKO_CERTIFICATE/) {
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my ($serial, $label, $certdata) = grabcert($inputfh);
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if (defined $certs{$label."\0".$serial}) {
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warn "Certificate $label duplicated!\n";
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}
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$certs{$label."\0".$serial} = $certdata;
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# We store the label in a separate hash because truncating the key
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# with \0 was causing garbage data after the end of the text.
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$labels{$label."\0".$serial} = $label;
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} elsif (/^CKA_CLASS CK_OBJECT_CLASS CKO_NSS_TRUST/) {
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my ($serial, $label, $trust) = grabtrust($inputfh);
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if (defined $trusts{$label."\0".$serial}) {
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warn "Trust for $label duplicated!\n";
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}
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$trusts{$label."\0".$serial} = $trust;
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$labels{$label."\0".$serial} = $label;
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} elsif (/^CVS_ID.*Revision: ([^ ]*).*/) {
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print "## Source: \"certdata.txt\" CVS revision $1\n##\n\n";
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}
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}
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sub label_to_filename(@) {
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my @res = @_;
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map { s/\0.*//; s/[^[:alnum:]\-]/_/g; $_ = "$_.pem"; } @res;
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return wantarray ? @res : $res[0];
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}
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# weed out untrusted certificates
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my $untrusted = 0;
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foreach my $it (keys %trusts) {
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if (!$trusts{$it}) {
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if (!exists($certs{$it})) {
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warn "Found trust for nonexistent certificate $labels{$it}\n" if $debug;
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} else {
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delete $certs{$it};
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warn "Skipping untrusted $labels{$it}\n" if $debug;
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$untrusted++;
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}
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}
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}
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if (!$outputdir) {
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print "## Untrusted certificates omitted from this bundle: $untrusted\n\n";
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}
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print STDERR "## Untrusted certificates omitted from this bundle: $untrusted\n";
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my $certcount = 0;
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foreach my $it (sort {uc($a) cmp uc($b)} keys %certs) {
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my $fh = *STDOUT;
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my $filename;
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if (!exists($trusts{$it})) {
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die "Found certificate without trust block,\naborting";
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}
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if ($outputdir) {
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$filename = label_to_filename($labels{$it});
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open($fh, ">", "$outputdir/$filename") or die "Failed to open certificate $filename";
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print_header($fh, $labels{$it});
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}
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printcert($fh, $labels{$it}, $certs{$it});
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if ($outputdir) {
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close($fh) or die "Unable to close: $filename";
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} else {
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print $fh "\n\n\n";
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}
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$certcount++;
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print STDERR "Trusting $certcount: $labels{$it}\n" if $debug;
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}
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if ($certcount < 25) {
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die "Certificate count of $certcount is implausibly low.\nAbort";
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}
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if (!$outputdir) {
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print "## Number of certificates: $certcount\n";
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print "## End of file.\n";
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}
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print STDERR "## Number of certificates: $certcount\n";
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21
secure/caroot/Makefile
Normal file
21
secure/caroot/Makefile
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@ -0,0 +1,21 @@
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# $FreeBSD$
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PACKAGE= caroot
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CLEANFILES+= certdata.txt
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SUBDIR+= trusted
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SUBDIR+= blacklisted
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.include <bsd.prog.mk>
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# To be used by secteam@ to update the trusted certificates
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fetchcerts: .PHONY
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fetch --no-sslv3 --no-tlsv1 -o certdata.txt 'https://hg.mozilla.org/projects/nss/raw-file/tip/lib/ckfw/builtins/certdata.txt'
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cleancerts: .PHONY
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@${MAKE} -C ${.CURDIR}/trusted ${.TARGET}
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updatecerts: .PHONY cleancerts fetchcerts
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perl ${.CURDIR}/MAca-bundle.pl -i certdata.txt -o ${.CURDIR}/trusted
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34
secure/caroot/README
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34
secure/caroot/README
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@ -0,0 +1,34 @@
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# $FreeBSD$
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This directory contains the scripts to update the TLS CA Root Certificates
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that comprise the 'root trust store'.
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The 'updatecerts' make target should be run periodically by secteam@
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specifically when there is an important change to the list of trusted root
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certificates included by Mozilla.
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It will:
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1) Remove the old trusted certificates (cleancerts)
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2) Download the latest certdata.txt from Mozilla (fetchcerts)
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3) Split certdata.txt into the individual .pem files (updatecerts)
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Then the results should manually be inspected (svn status)
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1) Any no-longer-trusted certificates should be moved to the
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blacklisted directory (svn mv)
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2) any newly added certificates will need to be added (svn add)
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The following make targets exist:
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cleancerts:
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Delete the old certificates, run as a dependency of updatecerts.
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fetchcerts:
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Download the latest certdata.txt from the Mozilla NSS hg repo
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See the changelog here:
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https://hg.mozilla.org/projects/nss/log/tip/lib/ckfw/builtins/certdata.txt
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updatecerts:
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Runs a perl script (MAca-bundle.pl) on the downloaded certdata.txt
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to generate the individual certificate files (.pem) and store them
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in the trusted/ directory.
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7
secure/caroot/blacklisted/Makefile
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7
secure/caroot/blacklisted/Makefile
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# $FreeBSD$
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BINDIR= /usr/share/certs/blacklisted
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FILES=
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.include <bsd.prog.mk>
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12
secure/caroot/trusted/Makefile
Normal file
12
secure/caroot/trusted/Makefile
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# $FreeBSD$
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BINDIR= /usr/share/certs/trusted
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TRUSTED_CERTS!= ls ${.CURDIR}/*.pem 2> /dev/null || true
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FILES+= ${TRUSTED_CERTS}
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cleancerts:
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@[ -z "${TRUSTED_CERTS}" ] || rm ${TRUSTED_CERTS}
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.include <bsd.prog.mk>
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@ -77,6 +77,7 @@ __DEFAULT_YES_OPTIONS = \
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BZIP2 \
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CALENDAR \
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CAPSICUM \
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CAROOT \
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CASPER \
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CCD \
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CDDL \
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Block a user