diff options
Diffstat (limited to 'modules/pam_unix/pam_unix_passwd.c')
| -rw-r--r-- | modules/pam_unix/pam_unix_passwd.c | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/modules/pam_unix/pam_unix_passwd.c b/modules/pam_unix/pam_unix_passwd.c index 2d330e51..c2e5de5e 100644 --- a/modules/pam_unix/pam_unix_passwd.c +++ b/modules/pam_unix/pam_unix_passwd.c @@ -240,15 +240,22 @@ static int _unix_run_update_binary(pam_handle_t *pamh, unsigned int ctrl, const /* wait for child */ /* if the stored password is NULL */ int rc=0; - if (fromwhat) - pam_modutil_write(fds[1], fromwhat, strlen(fromwhat)+1); - else - pam_modutil_write(fds[1], "", 1); - if (towhat) { - pam_modutil_write(fds[1], towhat, strlen(towhat)+1); + if (fromwhat) { + int len = strlen(fromwhat); + + if (len > PAM_MAX_RESP_SIZE) + len = PAM_MAX_RESP_SIZE; + pam_modutil_write(fds[1], fromwhat, len); } - else - pam_modutil_write(fds[1], "", 1); + pam_modutil_write(fds[1], "", 1); + if (towhat) { + int len = strlen(towhat); + + if (len > PAM_MAX_RESP_SIZE) + len = PAM_MAX_RESP_SIZE; + pam_modutil_write(fds[1], towhat, len); + } + pam_modutil_write(fds[1], "", 1); close(fds[0]); /* close here to avoid possible SIGPIPE above */ close(fds[1]); |