diff options
Diffstat (limited to 'src/cryptsetup/cryptsetup.c')
| -rw-r--r-- | src/cryptsetup/cryptsetup.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/src/cryptsetup/cryptsetup.c b/src/cryptsetup/cryptsetup.c index a24e61a035..347394db8e 100644 --- a/src/cryptsetup/cryptsetup.c +++ b/src/cryptsetup/cryptsetup.c @@ -497,15 +497,25 @@ int main(int argc, char *argv[]) { crypt_get_volume_key_size(cd)*8, argv[3]); - if (key_file) - k = crypt_activate_by_keyfile_offset(cd, argv[2], CRYPT_ANY_SLOT, key_file, opt_keyfile_size, - opt_keyfile_offset, flags); + if (key_file) { + struct stat st; + + /* Ideally we'd do this on the open + * fd, but since this is just a + * warning it's OK to do this in two + * steps */ + if (stat(key_file, &st) >= 0 && (st.st_mode & 0005)) + log_warning("Key file %s is world-readable. That's certainly not a good idea.", key_file); + + k = crypt_activate_by_keyfile_offset( + cd, argv[2], CRYPT_ANY_SLOT, key_file, opt_keyfile_size, + opt_keyfile_offset, flags); if (k < 0) { log_error("Failed to activate with key file '%s': %s", key_file, strerror(-k)); key_file = NULL; continue; } - else { + } else { char **p; STRV_FOREACH(p, passwords) { |