[dpdk-stable] [PATCH 1/3] examples/fips_validation: fix buffer overflow

[Olivier Matz <olivier.matz@6wind.com>]

If the file name is larger than MAX_STRING_SIZE (64), strcpy()
will overwrite the content of memory.

Replace strcpy() by rte_strscpy(), check its return value, and
increase file_name size to 256.

Fixes: 3d0fad56b74a ("examples/fips_validation: add crypto FIPS application")
Cc: stable@dpdk.org

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
---
 examples/fips_validation/fips_validation.c | 12 ++++++++++--
 examples/fips_validation/fips_validation.h |  3 ++-
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/examples/fips_validation/fips_validation.c b/examples/fips_validation/fips_validation.c
index 9bdf257b8b..13f763c9aa 100644
--- a/examples/fips_validation/fips_validation.c
+++ b/examples/fips_validation/fips_validation.c
@@ -281,7 +281,11 @@ fips_test_init(const char *req_file_path, const char *rsp_file_path,
 
 	fips_test_clear();
 
-	strcpy(info.file_name, req_file_path);
+	if (rte_strscpy(info.file_name, req_file_path,
+				sizeof(info.file_name)) < 0) {
+		RTE_LOG(ERR, USER1, "Path %s too long\n", req_file_path);
+		return -EINVAL;
+	}
 	info.algo = FIPS_TEST_ALGO_MAX;
 	if (parse_file_type(req_file_path) < 0) {
 		RTE_LOG(ERR, USER1, "File %s type not supported\n",
@@ -307,7 +311,11 @@ fips_test_init(const char *req_file_path, const char *rsp_file_path,
 		return -ENOMEM;
 	}
 
-	strlcpy(info.device_name, device_name, sizeof(info.device_name));
+	if (rte_strscpy(info.device_name, device_name,
+				sizeof(info.device_name)) < 0) {
+		RTE_LOG(ERR, USER1, "Device name %s too long\n", device_name);
+		return -EINVAL;
+	}
 
 	if (fips_test_parse_header() < 0) {
 		RTE_LOG(ERR, USER1, "Failed parsing header\n");
diff --git a/examples/fips_validation/fips_validation.h b/examples/fips_validation/fips_validation.h
index 75fa555fa6..deba83eada 100644
--- a/examples/fips_validation/fips_validation.h
+++ b/examples/fips_validation/fips_validation.h
@@ -14,6 +14,7 @@
 #define MAX_NB_TESTS		10240
 #define MAX_BUF_SIZE		2048
 #define MAX_STRING_SIZE		64
+#define MAX_FILE_NAME_SIZE	256
 #define MAX_DIGEST_SIZE		64
 
 #define POSITIVE_TEST		0
@@ -164,7 +165,7 @@ struct fips_test_interim_info {
 	uint32_t vec_start_off;
 	uint32_t nb_vec_lines;
 	char device_name[MAX_STRING_SIZE];
-	char file_name[MAX_STRING_SIZE];
+	char file_name[MAX_FILE_NAME_SIZE];
 
 	union {
 		struct aesavs_interim_data aes_data;
-- 
2.25.1