main/jansson: security fix for CVE-2016-4425

fixes #5789

2 files changed, 148 insertions, 6 deletions

diff --git a/main/jansson/APKBUILD b/main/jansson/APKBUILD
index 31a4456f7a..961bb2533e 100644
--- a/main/jansson/APKBUILD
+++ b/main/jansson/APKBUILD
@@ -1,7 +1,7 @@
 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=jansson
 pkgver=2.7
-pkgrel=0
+pkgrel=1
 pkgdesc="lightweight JSON library"
 url="http://www.digip.org/jansson/"
 arch="all"
@@ -11,7 +11,9 @@ depends_dev=""
 makedepends="$depends_dev"
 install=""
 subpackages="$pkgname-dev"
-source="http://www.digip.org/jansson/releases/jansson-$pkgver.tar.bz2"
+source="http://www.digip.org/jansson/releases/jansson-$pkgver.tar.bz2
+	CVE-2016-4425.patch
+	"
 
 _builddir="$srcdir"/jansson-$pkgver
 prepare() {
@@ -26,7 +28,6 @@ prepare() {
 
 build() {
 	cd "$_builddir"
-	LIBS=-lm \
 	./configure \
 		--build=$CBUILD \
 		--host=$CHOST \
@@ -44,6 +45,9 @@ package() {
 	make DESTDIR="$pkgdir" install || return 1
 }
 
-md5sums="ffac352f9c5f80a6ae8145d451af2c0e  jansson-2.7.tar.bz2"
-sha256sums="459f2b7cf22fb676286723f26169a17cf111fbfb6f54e3dc2ec6b6f9f4a97bdc  jansson-2.7.tar.bz2"
-sha512sums="f45861f1962e2a299cb657213f6dc5b0d560b8c7c13476bd722215bd1a91295ad63a86afc20db7b3ae0d95ac8018f62bb7e52eaea38c3295a9a8016da3a8f1aa  jansson-2.7.tar.bz2"
+md5sums="ffac352f9c5f80a6ae8145d451af2c0e  jansson-2.7.tar.bz2
+dc190cd37c6f7a455d6f9c309393aaf6  CVE-2016-4425.patch"
+sha256sums="459f2b7cf22fb676286723f26169a17cf111fbfb6f54e3dc2ec6b6f9f4a97bdc  jansson-2.7.tar.bz2
+4b653901fdcf49c2ae6829619ed7b006744c346392cb5a0792ba2b65c19b366e  CVE-2016-4425.patch"
+sha512sums="f45861f1962e2a299cb657213f6dc5b0d560b8c7c13476bd722215bd1a91295ad63a86afc20db7b3ae0d95ac8018f62bb7e52eaea38c3295a9a8016da3a8f1aa  jansson-2.7.tar.bz2
+919dd53f8a110f9825dc7f64ececc5da8e0b0b387201e1b8ba15a7d35fc4f94b0195ff6159fa364013f07b60ed15b80208b73230b748dfb301dc505dc586291e  CVE-2016-4425.patch"
diff --git a/main/jansson/CVE-2016-4425.patch b/main/jansson/CVE-2016-4425.patch
new file mode 100644
index 0000000000..9c2087bea8
--- /dev/null
+++ b/main/jansson/CVE-2016-4425.patch
@@ -0,0 +1,138 @@
+From 64ce0ad3731ebd77e02897b07920eadd0e2cc318 Mon Sep 17 00:00:00 2001
+From: Dmitry Janushkevich <gauri@tut.by>
+Date: Mon, 2 May 2016 13:59:26 +0200
+Subject: [PATCH] Fix for issue #282
+
+The fix limits recursion depths when parsing arrays and objects.
+The limit is configurable via the `JSON_PARSER_MAX_DEPTH` setting
+within `jansson_config.h` and is set by default to 2048.
+
+Update the RFC conformance document to note the limit; the RFC
+allows limits to be set by the implementation so nothing has
+actually changed w.r.t. conformance state.
+
+Reported by Gustavo Grieco.
+---
+ android/jansson_config.h                  |  4 ++++
+ cmake/jansson_config.h.cmake              |  4 ++++
+ doc/conformance.rst                       | 10 ++++++++++
+ src/jansson_config.h.in                   |  4 ++++
+ src/load.c                                | 10 ++++++++++
+ test/suites/invalid/recursion-depth/error |  2 ++
+ test/suites/invalid/recursion-depth/input |  1 +
+ 7 files changed, 35 insertions(+)
+ create mode 100644 test/suites/invalid/recursion-depth/error
+ create mode 100644 test/suites/invalid/recursion-depth/input
+
+diff --git a/android/jansson_config.h b/android/jansson_config.h
+index 0a313a0..689f7ed 100644
+--- a/android/jansson_config.h
++++ b/android/jansson_config.h
+@@ -36,4 +36,8 @@
+    otherwise to 0. */
+ #define JSON_HAVE_LOCALECONV 0
+ 
++/* Maximum recursion depth for parsing JSON input.
++   This limits the depth of e.g. array-within-array constructions. */
++#define JSON_PARSER_MAX_DEPTH 2048
++
+ #endif
+diff --git a/cmake/jansson_config.h.cmake b/cmake/jansson_config.h.cmake
+index 43e36c5..4a32148 100644
+--- a/cmake/jansson_config.h.cmake
++++ b/cmake/jansson_config.h.cmake
+@@ -60,5 +60,9 @@
+ #define JSON_HAVE_LOCALECONV @JSON_HAVE_LOCALECONV@
+ 
+ 
++/* Maximum recursion depth for parsing JSON input.
++   This limits the depth of e.g. array-within-array constructions. */
++#define JSON_PARSER_MAX_DEPTH 2048
++
+ 
+ #endif
+diff --git a/doc/conformance.rst b/doc/conformance.rst
+index de3947d..ea41d5c 100644
+--- a/doc/conformance.rst
++++ b/doc/conformance.rst
+@@ -108,3 +108,13 @@ types, ``long double``, etc. Obviously, shorter types like ``short``,
+ are implicitly handled via the ordinary C type coercion rules (subject
+ to overflow semantics). Also, no support or hooks are provided for any
+ supplemental "bignum" type add-on packages.
++
++Depth of nested values
++----------------------
++
++To avoid stack exhaustion, Jansson currently limits the nesting depth
++for arrays and objects to a certain value (default: 2048), defined as
++a macro ``JSON_PARSER_MAX_DEPTH`` within ``jansson_config.h``.
++
++The limit is allowed to be set by the RFC; there is no recommended value
++or required minimum depth to be supported.
+diff --git a/src/jansson_config.h.in b/src/jansson_config.h.in
+index 12580a0..aa02160 100644
+--- a/src/jansson_config.h.in
++++ b/src/jansson_config.h.in
+@@ -36,4 +36,8 @@
+    otherwise to 0. */
+ #define JSON_HAVE_LOCALECONV @json_have_localeconv@
+ 
++/* Maximum recursion depth for parsing JSON input.
++   This limits the depth of e.g. array-within-array constructions. */
++#define JSON_PARSER_MAX_DEPTH 2048
++
+ #endif
+diff --git a/test/suites/invalid/recursion-depth/error b/test/suites/invalid/recursion-depth/error
+new file mode 100644
+index 0000000..11e0537
+--- /dev/null
++++ b/test/suites/invalid/recursion-depth/error
+@@ -0,0 +1,2 @@
++1 2049 2049
++maximum parsing depth reached near '['
+diff --git a/test/suites/invalid/recursion-depth/input b/test/suites/invalid/recursion-depth/input
+new file mode 100644
+index 0000000..bfa47d9
+--- /dev/null
++++ b/test/suites/invalid/recursion-depth/input
+@@ -0,0 +1 @@
++[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[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[[
+--- ./src/load.c.orig
++++ ./src/load.c
+@@ -61,6 +61,7 @@
+ typedef struct {
+     stream_t stream;
+     strbuffer_t saved_text;
++    size_t depth;
+     int token;
+     union {
+         struct {
+@@ -800,6 +801,12 @@
+     json_t *json;
+     double value;
+ 
++    lex->depth++;
++    if(lex->depth > JSON_PARSER_MAX_DEPTH) {
++        error_set(error, lex, "maximum parsing depth reached");
++        return NULL;
++    }
++
+     switch(lex->token) {
+         case TOKEN_STRING: {
+             const char *value = lex->value.string.val;
+@@ -870,12 +877,15 @@
+     if(!json)
+         return NULL;
+ 
++    lex->depth--;
+     return json;
+ }
+ 
+ static json_t *parse_json(lex_t *lex, size_t flags, json_error_t *error)
+ {
+     json_t *result;
++
++    lex->depth = 0;
+ 
+     lex_scan(lex, error);
+     if(!(flags & JSON_DECODE_ANY)) {