mdw@git.distorted.org.uk Git - dpkg/blob - scripts/t/Dpkg_Source_Patch.t

   1 #!/usr/bin/perl
   2 #
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 2 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
  15
  16 use strict;
  17 use warnings;
  18
  19 use Test::More tests => 10;
  20 use Test::Dpkg qw(:paths);
  21
  22 use File::Path qw(make_path);
  23
  24 BEGIN {
  25     use_ok('Dpkg::Source::Patch');
  26 }
  27
  28 my $datadir = test_get_data_path('t/Dpkg_Source_Patch');
  29 my $tmpdir = 't.tmp/Dpkg_Source_Patch';
  30
  31 sub test_patch_escape {
  32     my ($name, $symlink, $patchname, $desc) = @_;
  33
  34     make_path("$tmpdir/$name-tree");
  35     make_path("$tmpdir/$name-out");
  36     symlink "../$name-out", "$tmpdir/$name-tree/$symlink";
  37
  38     my $patch = Dpkg::Source::Patch->new(filename => "$datadir/$patchname");
  39     eval {
  40         $patch->apply("$tmpdir/$name-tree", verbose => 0);
  41     };
  42     ok(rmdir "$tmpdir/$name-out", $desc);
  43 }
  44
  45 # This is CVE-2014-0471 with GNU patch >= 2.7
  46 test_patch_escape('c-style-parsed', "\tmp", 'c-style.patch',
  47                   'Patch cannot escape using known c-style encoded filename');
  48
  49 # This is CVE-2014-0471 with GNU patch < 2.7
  50 test_patch_escape('c-style-unknown', '\\tmp', 'c-style.patch',
  51                   'Patch cannot escape using unknown c-style encoded filename');
  52
  53 # This is CVE-2014-3865
  54 test_patch_escape('index-alone', 'symlink', 'index-alone.patch',
  55                   'Patch cannot escape using Index: w/o ---/+++ header');
  56 test_patch_escape('index-+++', 'symlink', 'index-+++.patch',
  57                   'Patch cannot escape using Index: w/ only +++ header');
  58 test_patch_escape('index-inert', 'symlink', 'index-inert.patch',
  59                   'Patch should not fail to apply using an inert Index:');
  60 ok(-e "$tmpdir/index-inert-tree/inert-file",
  61    'Patch with inert Index: applies correctly');
  62
  63 # This is CVE-2014-3864
  64 test_patch_escape('partial', 'symlink', 'partial.patch',
  65                   'Patch cannot escape using partial +++ header');
  66
  67 test_patch_escape('ghost-hunk', 'symlink', 'ghost-hunk.patch',
  68                   'Patch cannot escape using a disabling hunk');
  69
  70 # This is CVE-2017-8283
  71 test_patch_escape('indent-header', 'symlink', 'indent-header.patch',
  72                   'Patch cannot escape indented hunks');
  73
  74 1;