curl: fix CVE-2019-15601

(From OE-Core rev: 30f4f40c4c92b000fa3356fae0504da233b0f601)

Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-support/curl/curl/CVE-2019-15601.patch

@@ -0,0 +1,46 @@
+Upstream-Status: Backport [https://github.com/curl/curl/commit/1b71bc532bde8621fd3260843f8197182a467ff2]
+CVE: CVE-2019-15601
+Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>
+
+From 1b71bc532bde8621fd3260843f8197182a467ff2 Mon Sep 17 00:00:00 2001
+From: Daniel Stenberg <daniel@haxx.se>
+Date: Thu, 7 Nov 2019 10:13:01 +0100
+Subject: [PATCH] file: on Windows, refuse paths that start with \\
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+... as that might cause an unexpected SMB connection to a given host
+name.
+
+Reported-by: Fernando Muñoz
+CVE-2019-15601
+Bug: https://curl.haxx.se/docs/CVE-2019-15601.html
+---
+ lib/file.c | 6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+diff --git a/lib/file.c b/lib/file.c
+index d349cd9241..166931d7f1 100644
+--- a/lib/file.c
++++ b/lib/file.c
+@@ -136,7 +136,7 @@ static CURLcode file_connect(struct connectdata *conn, bool *done)
+   struct Curl_easy *data = conn->data;
+   char *real_path;
+   struct FILEPROTO *file = data->req.protop;
+-  int fd;
++  int fd = -1;
+ #ifdef DOS_FILESYSTEM
+   size_t i;
+   char *actual_path;
+@@ -181,7 +181,9 @@ static CURLcode file_connect(struct connectdata *conn, bool *done)
+       return CURLE_URL_MALFORMAT;
+     }
+ 
+-  fd = open_readonly(actual_path, O_RDONLY|O_BINARY);
++  if(strncmp("\\\\", actual_path, 2))
++    /* refuse to open path that starts with two backslashes */
++    fd = open_readonly(actual_path, O_RDONLY|O_BINARY);
+   file->path = actual_path;
+ #else
+   if(memchr(real_path, 0, real_path_len)) {

meta/recipes-support/curl/curl_7.66.0.bb

@@ -7,6 +7,7 @@ LIC_FILES_CHKSUM = "file://COPYING;md5=be5d9e1419c4363f4b32037a2d3b7ffa"
 
 SRC_URI = "http://curl.haxx.se/download/curl-${PV}.tar.bz2 \
            file://0001-replace-krb5-config-with-pkg-config.patch \
+           file://CVE-2019-15601.patch \
 "
 
 SRC_URI[md5sum] = "c238aa394e3aa47ca4fcb0491774149f"