1 files changed, 74 insertions, 0 deletions
diff --git a/scripts/t/Dpkg_Source_Patch.t b/scripts/t/Dpkg_Source_Patch.t
new file mode 100644
index 0000000..f50f15b
--- /dev/null
+++ b/scripts/t/Dpkg_Source_Patch.t
@@ -0,0 +1,74 @@
+#!/usr/bin/perl
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+use strict;
+use warnings;
+
+use Test::More tests => 10;
+use Test::Dpkg qw(:paths);
+
+use File::Path qw(make_path);
+
+BEGIN {
+    use_ok('Dpkg::Source::Patch');
+}
+
+my $datadir = test_get_data_path();
+my $tmpdir = test_get_temp_path();
+
+sub test_patch_escape {
+    my ($name, $symlink, $patchname, $desc) = @_;
+
+    make_path("$tmpdir/$name-tree");
+    make_path("$tmpdir/$name-out");
+    symlink "../$name-out", "$tmpdir/$name-tree/$symlink";
+
+    my $patch = Dpkg::Source::Patch->new(filename => "$datadir/$patchname");
+    eval {
+        $patch->apply("$tmpdir/$name-tree", verbose => 0);
+    };
+    ok(rmdir "$tmpdir/$name-out", $desc);
+}
+
+# This is CVE-2014-0471 with GNU patch >= 2.7
+test_patch_escape('c-style-parsed', "\tmp", 'c-style.patch',
+                  'Patch cannot escape using known c-style encoded filename');
+
+# This is CVE-2014-0471 with GNU patch < 2.7
+test_patch_escape('c-style-unknown', '\\tmp', 'c-style.patch',
+                  'Patch cannot escape using unknown c-style encoded filename');
+
+# This is CVE-2014-3865
+test_patch_escape('index-alone', 'symlink', 'index-alone.patch',
+                  'Patch cannot escape using Index: w/o ---/+++ header');
+test_patch_escape('index-+++', 'symlink', 'index-+++.patch',
+                  'Patch cannot escape using Index: w/ only +++ header');
+test_patch_escape('index-inert', 'symlink', 'index-inert.patch',
+                  'Patch should not fail to apply using an inert Index:');
+ok(-e "$tmpdir/index-inert-tree/inert-file",
+   'Patch with inert Index: applies correctly');
+
+# This is CVE-2014-3864
+test_patch_escape('partial', 'symlink', 'partial.patch',
+                  'Patch cannot escape using partial +++ header');
+
+test_patch_escape('ghost-hunk', 'symlink', 'ghost-hunk.patch',
+                  'Patch cannot escape using a disabling hunk');
+
+# This is CVE-2017-8283
+test_patch_escape('indent-header', 'symlink', 'indent-header.patch',
+                  'Patch cannot escape indented hunks');
+
+1;