mailinfo: disallow NUL character in mail's header
Signed-off-by: Đoàn Trần Công Danh <congdanhqx@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Đoàn Trần Công Danh committed
Apr 21, 2020 at 06:54 UTC
391999744771002cb5feded004879f36534b9b14
2 files changed
+10
-2
mailinfo.c
+5
index 0e9911df6d..5681d9130d 100644
--- a/mailinfo.c
+++ b/mailinfo.c
@@ -1138,6 +1138,11 @@ static void handle_info(struct mailinfo *mi)
else
continue;
+ if (memchr(hdr->buf, '\0', hdr->len)) {
+ error("a NUL byte in '%s' is not allowed.", header[i]);
+ mi->input_error = -1;
+ }
+
if (!strcmp(header[i], "Subject")) {
if (!mi->keep_subject) {
cleanup_subject(mi, hdr);
t/t4254-am-corrupt.sh
+5
-2
index 1bbc37bc92..daf01c309d 100755
--- a/t/t4254-am-corrupt.sh
+++ b/t/t4254-am-corrupt.sh
@@ -70,10 +70,13 @@ test_expect_success "NUL in commit message's body" '
grep "a NUL byte in commit log message not allowed" err
'
-test_expect_failure "NUL in commit message's header" "
+test_expect_success "NUL in commit message's header" "
test_when_finished 'git am --abort' &&
make_mbox_with_nul subject >subject.patch &&
- test_must_fail git am subject.patch
+ test_must_fail git mailinfo msg patch <subject.patch 2>err &&
+ grep \"a NUL byte in 'Subject' is not allowed\" err &&
+ test_must_fail git am subject.patch 2>err &&
+ grep \"a NUL byte in 'Subject' is not allowed\" err
"
test_done