From 297093e6a48a4c0fd307c2206c59a8c8eb84fb53 Mon Sep 17 00:00:00 2001
From: Valentin <awakenine@users.noreply.github.com>
Date: Fri, 6 Sep 2019 13:30:36 +0300
Subject: [PATCH] Update auth_mellon_mode.c

Fix open redirect CVE-2019-13038
---
 auth_mellon_util.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/auth_mellon_util.c b/auth_mellon_util.c
index fd442f9..7dff61e 100644
--- a/auth_mellon_util.c
+++ b/auth_mellon_util.c
@@ -116,6 +116,10 @@ int am_validate_redirect_url(request_rec *r, const char *url)
 
     /* Sanity check of the scheme of the domain. We only allow http and https. */
     if (uri.scheme) {
+	/* http and https schemes without hostname are invalid. */
+        if (!uri.hostname) {
+            return HTTP_BAD_REQUEST;
+	}
         if (strcasecmp(uri.scheme, "http")
             && strcasecmp(uri.scheme, "https")) {
             AM_LOG_RERROR(APLOG_MARK, APLOG_ERR, 0, r,
-- 
2.21.0