From 66cd97e558cdb57bff2dfc2bf8734b0ee12f648e Mon Sep 17 00:00:00 2001 From: Stefan Metzmacher Date: Mon, 4 Oct 2021 17:29:34 +0200 Subject: [PATCH] CVE-2020-25717: s4:auth/ntlm: make sure auth_check_password() defaults to r->out.authoritative = true We need to make sure that temporary failures don't trigger a fallback to the local SAM that silently ignores the domain name part for users. BUG: https://bugzilla.samba.org/show_bug.cgi?id=14556 Signed-off-by: Stefan Metzmacher Reviewed-by: Andrew Bartlett --- source4/auth/ntlm/auth.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/source4/auth/ntlm/auth.c b/source4/auth/ntlm/auth.c index 1aa2e3b065f..e0c4436343c 100644 --- a/source4/auth/ntlm/auth.c +++ b/source4/auth/ntlm/auth.c @@ -169,6 +169,11 @@ _PUBLIC_ NTSTATUS auth_check_password(struct auth4_context *auth_ctx, /*TODO: create a new event context here! */ ev = auth_ctx->event_ctx; + /* + * We are authoritative by default + */ + *pauthoritative = 1; + subreq = auth_check_password_send(mem_ctx, ev, auth_ctx, -- 2.47.2