libubox: backport security patches

This backports some security relevant patches from libubox master. These
patches should not change the existing API and ABI so that old
applications still work like before without any recompilation.
Application can now also use more secure APIs.

The new more secure interfaces are also available, but not used.

OpenWrt master and 19.07 already have these patches by using a more
recent libubox version.

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

1 files changed, 39 insertions, 0 deletions

diff --git a/package/libs/libubox/patches/0002-jshn-fix-off-by-one-in-jshn_parse_file.patch b/package/libs/libubox/patches/0002-jshn-fix-off-by-one-in-jshn_parse_file.patch
new file mode 100644
index 0000000000..17a045f261
--- /dev/null
+++ b/package/libs/libubox/patches/0002-jshn-fix-off-by-one-in-jshn_parse_file.patch
@@ -0,0 +1,39 @@
+From f27853d71a2cb99ec5de3881716a14611ada307c Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Petr=20=C5=A0tetiar?= <ynezz@true.cz>
+Date: Sat, 23 Nov 2019 22:48:25 +0100
+Subject: jshn: fix off by one in jshn_parse_file
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Fixes following error:
+
+ Invalid read of size 1
+   at 0x4C32D04: strlen
+   by 0x5043367: json_tokener_parse_ex
+   by 0x5045316: json_tokener_parse_verbose
+   by 0x504537D: json_tokener_parse
+   by 0x401AB1: jshn_parse (jshn.c:179)
+   by 0x40190D: jshn_parse_file (jshn.c:370)
+   by 0x40190D: main (jshn.c:434)
+ Address 0x5848c4c is 0 bytes after a block of size 1,036 alloc'd
+   at 0x4C2FB0F: malloc
+   by 0x4018E2: jshn_parse_file (jshn.c:357)
+   by 0x4018E2: main (jshn.c:434)
+
+Signed-off-by: Petr Štetiar <ynezz@true.cz>
+---
+ jshn.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/jshn.c
++++ b/jshn.c
+@@ -384,7 +384,7 @@ int main(int argc, char **argv)
+ 				close(fd);
+ 				return 3;
+ 			}
+-			if (!(fbuf = malloc(sb.st_size))) {
++			if (!(fbuf = calloc(1, sb.st_size+1))) {
+ 				fprintf(stderr, "Error allocating memory for %s\n", optarg);
+ 				close(fd);
+ 				return 3;