diff options
Diffstat (limited to 'contrib/libarchive/libarchive/test/test_write_disk_secure745.c')
| -rw-r--r-- | contrib/libarchive/libarchive/test/test_write_disk_secure745.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/contrib/libarchive/libarchive/test/test_write_disk_secure745.c b/contrib/libarchive/libarchive/test/test_write_disk_secure745.c new file mode 100644 index 0000000..870b064 --- /dev/null +++ b/contrib/libarchive/libarchive/test/test_write_disk_secure745.c @@ -0,0 +1,79 @@ +/*- + * Copyright (c) 2003-2007,2016 Tim Kientzle + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +#include "test.h" +__FBSDID("$FreeBSD$"); + +#define UMASK 022 + +/* + * Github Issue #745 describes a bug in the sandboxing code that + * allows one to use a symlink to edit the permissions on a file or + * directory outside of the sandbox. + */ + +DEFINE_TEST(test_write_disk_secure745) +{ +#if defined(_WIN32) && !defined(__CYGWIN__) + skipping("archive_write_disk security checks not supported on Windows"); +#else + struct archive *a; + struct archive_entry *ae; + + /* Start with a known umask. */ + assertUmask(UMASK); + + /* Create an archive_write_disk object. */ + assert((a = archive_write_disk_new()) != NULL); + archive_write_disk_set_options(a, ARCHIVE_EXTRACT_SECURE_SYMLINKS); + + /* The target dir: The one we're going to try to change permission on */ + assertMakeDir("target", 0700); + + /* The sandbox dir we're going to run inside of. */ + assertMakeDir("sandbox", 0700); + assertChdir("sandbox"); + + /* Create a symlink pointing to the target directory */ + assert((ae = archive_entry_new()) != NULL); + archive_entry_copy_pathname(ae, "sym"); + archive_entry_set_mode(ae, AE_IFLNK | 0777); + archive_entry_copy_symlink(ae, "../target"); + assert(0 == archive_write_header(a, ae)); + archive_entry_free(ae); + + /* Try to alter the target dir through the symlink; this should fail. */ + assert((ae = archive_entry_new()) != NULL); + archive_entry_copy_pathname(ae, "sym"); + archive_entry_set_mode(ae, S_IFDIR | 0777); + assert(0 == archive_write_header(a, ae)); + archive_entry_free(ae); + + /* Permission of target dir should not have changed. */ + assertFileMode("../target", 0700); + + assert(0 == archive_write_close(a)); + archive_write_free(a); +#endif +} |
