curl: fix security problems

This fixes the following security problems:
 * CVE-2017-1000100 TFTP sends more than buffer size
 * CVE-2017-1000101 URL globbing out of bounds read

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

3 files changed, 75 insertions, 1 deletions

diff --git a/package/network/utils/curl/Makefile b/package/network/utils/curl/Makefile
index 9b357a0aa5..758532e30a 100644
--- a/package/network/utils/curl/Makefile
+++ b/package/network/utils/curl/Makefile
@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=curl
 PKG_VERSION:=7.52.1
-PKG_RELEASE:=4
+PKG_RELEASE:=5
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
 PKG_SOURCE_URL:=http://curl.haxx.se/download/ \
diff --git a/package/network/utils/curl/patches/103-CVE-2017-1000100.patch b/package/network/utils/curl/patches/103-CVE-2017-1000100.patch
new file mode 100644
index 0000000000..93ab97bd14
--- /dev/null
+++ b/package/network/utils/curl/patches/103-CVE-2017-1000100.patch
@@ -0,0 +1,41 @@
+From 358b2b131ad6c095696f20dcfa62b8305263f898 Mon Sep 17 00:00:00 2001
+From: Daniel Stenberg <daniel@haxx.se>
+Date: Tue, 1 Aug 2017 17:16:46 +0200
+Subject: [PATCH] tftp: reject file name lengths that don't fit
+
+... and thereby avoid telling send() to send off more bytes than the
+size of the buffer!
+
+CVE-2017-1000100
+
+Bug: https://curl.haxx.se/docs/adv_20170809B.html
+Reported-by: Even Rouault
+
+Credit to OSS-Fuzz for the discovery
+---
+ lib/tftp.c | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+--- a/lib/tftp.c
++++ b/lib/tftp.c
+@@ -5,7 +5,7 @@
+  *                            | (__| |_| |  _ <| |___
+  *                             \___|\___/|_| \_\_____|
+  *
+- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al.
++ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
+  *
+  * This software is licensed as described in the file COPYING, which
+  * you should have received as part of this distribution. The terms
+@@ -490,6 +490,11 @@ static CURLcode tftp_send_first(tftp_sta
+     if(result)
+       return result;
+ 
++    if(strlen(filename) > (state->blksize - strlen(mode) - 4)) {
++      failf(data, "TFTP file name too long\n");
++      return CURLE_TFTP_ILLEGAL; /* too long file name field */
++    }
++
+     snprintf((char *)state->spacket.data+2,
+              state->blksize,
+              "%s%c%s%c", filename, '\0',  mode, '\0');
diff --git a/package/network/utils/curl/patches/104-CVE-2017-1000101.patch b/package/network/utils/curl/patches/104-CVE-2017-1000101.patch
new file mode 100644
index 0000000000..835b73eef9
--- /dev/null
+++ b/package/network/utils/curl/patches/104-CVE-2017-1000101.patch
@@ -0,0 +1,33 @@
+From 453e7a7a03a2cec749abd3878a48e728c515cca7 Mon Sep 17 00:00:00 2001
+From: Daniel Stenberg <daniel@haxx.se>
+Date: Tue, 1 Aug 2017 17:16:07 +0200
+Subject: [PATCH] glob: do not continue parsing after a strtoul() overflow
+ range
+
+Added test 1289 to verify.
+
+CVE-2017-1000101
+
+Bug: https://curl.haxx.se/docs/adv_20170809A.html
+Reported-by: Brian Carpenter
+---
+ src/tool_urlglob.c      |  5 ++++-
+ tests/data/Makefile.inc |  2 +-
+ tests/data/test1289     | 35 +++++++++++++++++++++++++++++++++++
+ 3 files changed, 40 insertions(+), 2 deletions(-)
+ create mode 100644 tests/data/test1289
+
+--- a/src/tool_urlglob.c
++++ b/src/tool_urlglob.c
+@@ -272,7 +272,10 @@ static CURLcode glob_range(URLGlob *glob
+         }
+         errno = 0;
+         max_n = strtoul(pattern, &endp, 10);
+-        if(errno || (*endp == ':')) {
++        if(errno)
++          /* overflow */
++          endp = NULL;
++        else if(*endp == ':') {
+           pattern = endp+1;
+           errno = 0;
+           step_n = strtoul(pattern, &endp, 10);