diff options
Diffstat (limited to 'modules/pam_unix/support.c')
| -rw-r--r-- | modules/pam_unix/support.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/modules/pam_unix/support.c b/modules/pam_unix/support.c index fdb45c20..abccd828 100644 --- a/modules/pam_unix/support.c +++ b/modules/pam_unix/support.c @@ -609,7 +609,12 @@ static int _unix_run_helper_binary(pam_handle_t *pamh, const char *passwd, /* if the stored password is NULL */ int rc=0; if (passwd != NULL) { /* send the password to the child */ - if (write(fds[1], passwd, strlen(passwd)+1) == -1) { + int len = strlen(passwd); + + if (len > PAM_MAX_RESP_SIZE) + len = PAM_MAX_RESP_SIZE; + if (write(fds[1], passwd, len) == -1 || + write(fds[1], "", 1) == -1) { pam_syslog (pamh, LOG_ERR, "Cannot send password to helper: %m"); retval = PAM_AUTH_ERR; } |