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fix off-by-one buffer overflows
[cfe_generate_password.git]
/
cfe_generate_password.c
diff --git
a/cfe_generate_password.c
b/cfe_generate_password.c
index
8746cd1
..
2e21b45
100644
(file)
--- a/
cfe_generate_password.c
+++ b/
cfe_generate_password.c
@@
-86,12
+86,12
@@
static void
pr_error_exit(unsigned int usage, const char *error, ...)
{
va_list args;
pr_error_exit(unsigned int usage, const char *error, ...)
{
va_list args;
- char error_message[MESSAGE_SIZE];
+ char error_message[MESSAGE_SIZE
+ 1
];
if (!error) return;
va_start(args, error);
if (!error) return;
va_start(args, error);
- (void) vsnprintf(error_message, MESSAGE_SIZE, error, args);
+ (void) vsnprintf(error_message, MESSAGE_SIZE
+ 1
, error, args);
va_end(args);
fprintf(stderr, "Error: %s\n", error_message);
va_end(args);
fprintf(stderr, "Error: %s\n", error_message);
@@
-119,7
+119,7
@@
generate_seed(char *mac, char *timestamp, char *seed)
size_t i;
char *mac_ptr = mac + 9;
size_t ts_len = strlen(timestamp);
size_t i;
char *mac_ptr = mac + 9;
size_t ts_len = strlen(timestamp);
- for (i = 0; i <
=
SEED_SIZE; ++i) {
+ for (i = 0; i < SEED_SIZE; ++i) {
/* if no timestamp assume CFE get_time() returned 0 and CFE g_pw_timestamp == 0x00000000 */
if (i < 6)
seed[i] = ts_len ? timestamp[i] : '0';
/* if no timestamp assume CFE get_time() returned 0 and CFE g_pw_timestamp == 0x00000000 */
if (i < 6)
seed[i] = ts_len ? timestamp[i] : '0';