dev-libs/crypto++: fix CVE-2017-9434

Bug: 620926

Package-Manager: Portage-2.3.5, Repoman-2.3.1

2 files changed, 105 insertions, 0 deletions

diff --git a/dev-libs/crypto++/crypto++-5.6.5-r1.ebuild b/dev-libs/crypto++/crypto++-5.6.5-r1.ebuild
new file mode 100644
index 000000000000..47aa6d36e782
--- /dev/null
+++ b/dev-libs/crypto++/crypto++-5.6.5-r1.ebuild
@@ -0,0 +1,60 @@
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+inherit flag-o-matic toolchain-funcs
+
+DESCRIPTION="C++ class library of cryptographic schemes"
+HOMEPAGE="http://cryptopp.com"
+SRC_URI="https://www.cryptopp.com/cryptopp${PV//.}.zip"
+
+LICENSE="Boost-1.0"
+SLOT="0/5.6" # subslot is so version
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ppc ~ppc64 ~sparc ~x86 ~x64-macos"
+IUSE="static-libs"
+
+DEPEND="app-arch/unzip"
+
+S="${WORKDIR}"
+
+PATCHES=(
+	"${FILESDIR}/${PN}-5.6.4-nonative.patch"
+	"${FILESDIR}/${P}-CVE-2017-9434.patch"
+)
+
+pkg_setup() {
+	export CXX="$(tc-getCXX)"
+	export LIBDIR="${EPREFIX}/usr/$(get_libdir)"
+	export PREFIX="${EPREFIX}/usr"
+}
+
+src_compile() {
+	# higher optimizations cause problems
+	replace-flags -O3 -O2
+	# ASM isn't Darwin/Mach-O ready, #479554, buildsys doesn't grok CPPFLAGS
+	[[ ${CHOST} == *-darwin* ]] && append-cxxflags -DCRYPTOPP_DISABLE_ASM
+
+	emake -f GNUmakefile all shared
+}
+
+src_install() {
+	default
+
+	# remove leftovers as build system sucks
+	rm -fr "${ED}"/usr/bin "${ED}"/usr/share/cryptopp
+	use static-libs || rm -f "${ED}${EPREFIX}"/usr/$(get_libdir)/*.a
+
+	# compatibility
+	dosym cryptopp "${EPREFIX}"/usr/include/crypto++
+	for f in "${ED}${EPREFIX}"/usr/$(get_libdir)/*; do
+		ln -s "$(basename "${f}")" "$(echo "${f}" | sed 's/cryptopp/crypto++/')" || die
+	done
+}
+
+pkg_preinst() {
+	# we switched directory to symlink
+	# make sure portage digests that
+	rm -fr "${EROOT}/usr/include/crypto++"
+	rm -fr "${EROOT}/usr/include/cryptopp"
+}
diff --git a/dev-libs/crypto++/files/crypto++-5.6.5-CVE-2017-9434.patch b/dev-libs/crypto++/files/crypto++-5.6.5-CVE-2017-9434.patch
new file mode 100644
index 000000000000..428f48901a31
--- /dev/null
+++ b/dev-libs/crypto++/files/crypto++-5.6.5-CVE-2017-9434.patch
@@ -0,0 +1,45 @@
+From 07dbcc3d9644b18e05c1776db2a57fe04d780965 Mon Sep 17 00:00:00 2001
+From: Jeffrey Walton <noloader@gmail.com>
+Date: Wed, 10 May 2017 18:17:12 -0400
+Subject: [PATCH] Add Inflator::BadDistanceErr exception (Issue 414) The
+ improved validation and excpetion clears the Address Sanitizer and Undefined
+ Behavior Sanitizer findings
+
+---
+ zinflate.cpp | 8 +++++++-
+ zinflate.h   | 4 ++++
+ 3 files changed, 14 insertions(+), 4 deletions(-)
+
+diff --git a/zinflate.cpp b/zinflate.cpp
+index 664efe6..fbd7505 100644
+--- a/zinflate.cpp
++++ b/zinflate.cpp
+@@ -550,12 +550,16 @@ bool Inflator::DecodeBody()
+ 						break;

+ 					}

+ 		case DISTANCE_BITS:

++					if (m_distance >= COUNTOF(distanceExtraBits))

++						throw BadDistanceErr();

+ 					bits = distanceExtraBits[m_distance];

+ 					if (!m_reader.FillBuffer(bits))

+ 					{

+ 						m_nextDecode = DISTANCE_BITS;

+ 						break;

+ 					}

++					if (m_distance >= COUNTOF(distanceStarts))

++						throw BadDistanceErr();

+ 					m_distance = m_reader.GetBits(bits) + distanceStarts[m_distance];

+ 					OutputPast(m_literal, m_distance);

+ 				}

+diff --git a/zinflate.h b/zinflate.h
+index e2fd237..c47d2f6 100644
+--- a/zinflate.h
++++ b/zinflate.h
+@@ -96,6 +96,7 @@ public:
+ 	};

+ 	class UnexpectedEndErr : public Err {public: UnexpectedEndErr() : Err(INVALID_DATA_FORMAT, "Inflator: unexpected end of compressed block") {}};

+ 	class BadBlockErr : public Err {public: BadBlockErr() : Err(INVALID_DATA_FORMAT, "Inflator: error in compressed block") {}};

++	class BadDistanceErr : public Err {public: BadDistanceErr() : Err(INVALID_DATA_FORMAT, "Inflator: error in bit distance") {}};

+ 

+ 	//! \brief RFC 1951 Decompressor

+ 	//! \param attachment the filter's attached transformation