winbind: check for allowed domains in winbindd_dual_pam_chng_pswd_auth_crap()

BUG: https://bugzilla.samba.org/show_bug.cgi?id=14602

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
(cherry picked from commit 4bc17600bc50fbc0e54d9d019d8db67001fc3eef)

diff --git a/source3/winbindd/winbindd_pam.c b/source3/winbindd/winbindd_pam.c
index 78565d2854f4c994a42739bd988dde874110d357..477d52da3ed4d5f66997bce817ef84852ec692df 100644 (file)
--- a/source3/winbindd/winbindd_pam.c
+++ b/source3/winbindd/winbindd_pam.c
@@ -3105,6 +3105,15 @@ enum winbindd_result winbindd_dual_pam_chng_pswd_auth_crap(struct winbindd_domai
                fstrcpy(domain,lp_workgroup());
        }
 
+       if (!is_allowed_domain(domain)) {
+               DBG_NOTICE("Authentication failed for user [%s] "
+                          "from firewalled domain [%s]\n",
+                          state->request->data.chng_pswd_auth_crap.user,
+                          domain);
+               result = NT_STATUS_AUTHENTICATION_FIREWALL_FAILED;
+               goto done;
+       }
+
        if(!*user) {
                fstrcpy(user, state->request->data.chng_pswd_auth_crap.user);
        }