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diff --git a/modules/pam_exec/pam_exec.c b/modules/pam_exec/pam_exec.c
index 52dc681..4ed6e34 100644
--- a/modules/pam_exec/pam_exec.c
+++ b/modules/pam_exec/pam_exec.c
@@ -103,11 +103,14 @@ call_exec (const char *pam_type, pam_handle_t *pamh,
int optargc;
const char *logfile = NULL;
const char *authtok = NULL;
+ char authtok_buf[PAM_MAX_RESP_SIZE+1];
+
pid_t pid;
int fds[2];
int stdout_fds[2];
FILE *stdout_file = NULL;
+ memset(authtok_buf, 0, sizeof(authtok_buf));
if (argc < 1) {
pam_syslog (pamh, LOG_ERR,
"This module needs at least one argument");
@@ -180,12 +183,12 @@ call_exec (const char *pam_type, pam_handle_t *pamh,
if (resp)
{
pam_set_item (pamh, PAM_AUTHTOK, resp);
- authtok = strndupa (resp, PAM_MAX_RESP_SIZE);
+ authtok = strncpy(authtok_buf, resp, sizeof(authtok_buf));
_pam_drop (resp);
}
}
else
- authtok = strndupa (void_pass, PAM_MAX_RESP_SIZE);
+ authtok = strncpy(authtok_buf, void_pass, sizeof(authtok_buf));
if (pipe(fds) != 0)
{
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