dev-libs/openssl: fix CVE-2024-2511 for 3.1.5

Bug: https://bugs.gentoo.org/930047
Signed-off-by: Sam James <sam@gentoo.org>

2 files changed, 423 insertions, 0 deletions

diff --git a/dev-libs/openssl/files/openssl-3.1.5-CVE-2024-2511.patch b/dev-libs/openssl/files/openssl-3.1.5-CVE-2024-2511.patch
new file mode 100644
index 000000000000..c5b7dfe449f7
--- /dev/null
+++ b/dev-libs/openssl/files/openssl-3.1.5-CVE-2024-2511.patch
@@ -0,0 +1,137 @@
+https://www.openssl.org/news/secadv/20240408.txt
+https://bugs.gentoo.org/930047
+https://github.com/openssl/openssl/commit/7e4d731b1c07201ad9374c1cd9ac5263bdf35bce
+https://github.com/openssl/openssl/commit/c342f4b8bd2d0b375b0e22337057c2eab47d9b96
+
+From 7e4d731b1c07201ad9374c1cd9ac5263bdf35bce Mon Sep 17 00:00:00 2001
+From: Matt Caswell <matt@openssl.org>
+Date: Tue, 5 Mar 2024 15:43:53 +0000
+Subject: [PATCH] Fix unconstrained session cache growth in TLSv1.3
+
+In TLSv1.3 we create a new session object for each ticket that we send.
+We do this by duplicating the original session. If SSL_OP_NO_TICKET is in
+use then the new session will be added to the session cache. However, if
+early data is not in use (and therefore anti-replay protection is being
+used), then multiple threads could be resuming from the same session
+simultaneously. If this happens and a problem occurs on one of the threads,
+then the original session object could be marked as not_resumable. When we
+duplicate the session object this not_resumable status gets copied into the
+new session object. The new session object is then added to the session
+cache even though it is not_resumable.
+
+Subsequently, another bug means that the session_id_length is set to 0 for
+sessions that are marked as not_resumable - even though that session is
+still in the cache. Once this happens the session can never be removed from
+the cache. When that object gets to be the session cache tail object the
+cache never shrinks again and grows indefinitely.
+
+CVE-2024-2511
+
+Reviewed-by: Neil Horman <nhorman@openssl.org>
+Reviewed-by: Tomas Mraz <tomas@openssl.org>
+(Merged from https://github.com/openssl/openssl/pull/24044)
+--- a/ssl/ssl_lib.c
++++ b/ssl/ssl_lib.c
+@@ -3737,9 +3737,10 @@ void ssl_update_cache(SSL *s, int mode)
+ 
+     /*
+      * If the session_id_length is 0, we are not supposed to cache it, and it
+-     * would be rather hard to do anyway :-)
++     * would be rather hard to do anyway :-). Also if the session has already
++     * been marked as not_resumable we should not cache it for later reuse.
+      */
+-    if (s->session->session_id_length == 0)
++    if (s->session->session_id_length == 0 || s->session->not_resumable)
+         return;
+ 
+     /*
+--- a/ssl/ssl_sess.c
++++ b/ssl/ssl_sess.c
+@@ -154,16 +154,11 @@ SSL_SESSION *SSL_SESSION_new(void)
+     return ss;
+ }
+ 
+-SSL_SESSION *SSL_SESSION_dup(const SSL_SESSION *src)
+-{
+-    return ssl_session_dup(src, 1);
+-}
+-
+ /*
+  * Create a new SSL_SESSION and duplicate the contents of |src| into it. If
+  * ticket == 0 then no ticket information is duplicated, otherwise it is.
+  */
+-SSL_SESSION *ssl_session_dup(const SSL_SESSION *src, int ticket)
++static SSL_SESSION *ssl_session_dup_intern(const SSL_SESSION *src, int ticket)
+ {
+     SSL_SESSION *dest;
+ 
+@@ -287,6 +282,27 @@ SSL_SESSION *ssl_session_dup(const SSL_SESSION *src, int ticket)
+     return NULL;
+ }
+ 
++SSL_SESSION *SSL_SESSION_dup(const SSL_SESSION *src)
++{
++    return ssl_session_dup_intern(src, 1);
++}
++
++/*
++ * Used internally when duplicating a session which might be already shared.
++ * We will have resumed the original session. Subsequently we might have marked
++ * it as non-resumable (e.g. in another thread) - but this copy should be ok to
++ * resume from.
++ */
++SSL_SESSION *ssl_session_dup(const SSL_SESSION *src, int ticket)
++{
++    SSL_SESSION *sess = ssl_session_dup_intern(src, ticket);
++
++    if (sess != NULL)
++        sess->not_resumable = 0;
++
++    return sess;
++}
++
+ const unsigned char *SSL_SESSION_get_id(const SSL_SESSION *s, unsigned int *len)
+ {
+     if (len)
+--- a/ssl/statem/statem_srvr.c
++++ b/ssl/statem/statem_srvr.c
+@@ -2338,9 +2338,8 @@ int tls_construct_server_hello(SSL *s, WPACKET *pkt)
+      * so the following won't overwrite an ID that we're supposed
+      * to send back.
+      */
+-    if (s->session->not_resumable ||
+-        (!(s->ctx->session_cache_mode & SSL_SESS_CACHE_SERVER)
+-         && !s->hit))
++    if (!(s->ctx->session_cache_mode & SSL_SESS_CACHE_SERVER)
++            && !s->hit)
+         s->session->session_id_length = 0;
+ 
+     if (usetls13) {
+
+From c342f4b8bd2d0b375b0e22337057c2eab47d9b96 Mon Sep 17 00:00:00 2001
+From: Matt Caswell <matt@openssl.org>
+Date: Fri, 15 Mar 2024 17:58:42 +0000
+Subject: [PATCH] Hardening around not_resumable sessions
+
+Make sure we can't inadvertently use a not_resumable session
+
+Related to CVE-2024-2511
+
+Reviewed-by: Neil Horman <nhorman@openssl.org>
+Reviewed-by: Tomas Mraz <tomas@openssl.org>
+(Merged from https://github.com/openssl/openssl/pull/24044)
+--- a/ssl/ssl_sess.c
++++ b/ssl/ssl_sess.c
+@@ -533,6 +533,12 @@ SSL_SESSION *lookup_sess_in_cache(SSL *s, const unsigned char *sess_id,
+         ret = s->session_ctx->get_session_cb(s, sess_id, sess_id_len, &copy);
+ 
+         if (ret != NULL) {
++            if (ret->not_resumable) {
++                /* If its not resumable then ignore this session */
++                if (!copy)
++                    SSL_SESSION_free(ret);
++                return NULL;
++            }
+             ssl_tsan_counter(s->session_ctx,
+                              &s->session_ctx->stats.sess_cb_hit);
+ 
diff --git a/dev-libs/openssl/openssl-3.1.5-r2.ebuild b/dev-libs/openssl/openssl-3.1.5-r2.ebuild
new file mode 100644
index 000000000000..1c3b048b75a0
--- /dev/null
+++ b/dev-libs/openssl/openssl-3.1.5-r2.ebuild
@@ -0,0 +1,286 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/openssl.org.asc
+inherit edo flag-o-matic linux-info toolchain-funcs
+inherit multilib multilib-minimal multiprocessing preserve-libs verify-sig
+
+DESCRIPTION="Robust, full-featured Open Source Toolkit for the Transport Layer Security (TLS)"
+HOMEPAGE="https://www.openssl.org/"
+
+MY_P=${P/_/-}
+
+if [[ ${PV} == 9999 ]] ; then
+	EGIT_REPO_URI="https://github.com/openssl/openssl.git"
+
+	inherit git-r3
+else
+	SRC_URI="
+		mirror://openssl/source/${MY_P}.tar.gz
+		verify-sig? ( mirror://openssl/source/${MY_P}.tar.gz.asc )
+	"
+	KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~arm64-macos ~ppc-macos ~x64-macos ~x64-solaris"
+fi
+
+S="${WORKDIR}"/${MY_P}
+
+LICENSE="Apache-2.0"
+SLOT="0/$(ver_cut 1)" # .so version of libssl/libcrypto
+IUSE="+asm cpu_flags_x86_sse2 fips ktls rfc3779 sctp static-libs test tls-compression vanilla verify-sig weak-ssl-ciphers"
+RESTRICT="!test? ( test )"
+
+COMMON_DEPEND="
+	!<net-misc/openssh-9.2_p1-r3
+	tls-compression? ( >=sys-libs/zlib-1.2.8-r1[static-libs(+)?,${MULTILIB_USEDEP}] )
+"
+BDEPEND="
+	>=dev-lang/perl-5
+	sctp? ( >=net-misc/lksctp-tools-1.0.12 )
+	test? (
+		sys-apps/diffutils
+		app-alternatives/bc
+		sys-process/procps
+	)
+	verify-sig? ( >=sec-keys/openpgp-keys-openssl-20230801 )"
+
+DEPEND="${COMMON_DEPEND}"
+RDEPEND="${COMMON_DEPEND}"
+PDEPEND="app-misc/ca-certificates"
+
+MULTILIB_WRAPPED_HEADERS=(
+	/usr/include/openssl/configuration.h
+)
+
+PATCHES=(
+	"${FILESDIR}"/${P}-p11-segfault.patch
+	"${FILESDIR}"/${P}-CVE-2024-2511.patch
+)
+
+pkg_setup() {
+	if use ktls ; then
+		if kernel_is -lt 4 18 ; then
+			ewarn "Kernel implementation of TLS (USE=ktls) requires kernel >=4.18!"
+		else
+			CONFIG_CHECK="~TLS ~TLS_DEVICE"
+			ERROR_TLS="You will be unable to offload TLS to kernel because CONFIG_TLS is not set!"
+			ERROR_TLS_DEVICE="You will be unable to offload TLS to kernel because CONFIG_TLS_DEVICE is not set!"
+			use test && CONFIG_CHECK+=" ~CRYPTO_USER_API_SKCIPHER"
+
+			linux-info_pkg_setup
+		fi
+	fi
+
+	[[ ${MERGE_TYPE} == binary ]] && return
+
+	# must check in pkg_setup; sysctl doesn't work with userpriv!
+	if use test && use sctp ; then
+		# test_ssl_new will fail with "Ensure SCTP AUTH chunks are enabled in kernel"
+		# if sctp.auth_enable is not enabled.
+		local sctp_auth_status=$(sysctl -n net.sctp.auth_enable 2>/dev/null)
+		if [[ -z "${sctp_auth_status}" ]] || [[ ${sctp_auth_status} != 1 ]] ; then
+			die "FEATURES=test with USE=sctp requires net.sctp.auth_enable=1!"
+		fi
+	fi
+}
+
+src_prepare() {
+	# Make sure we only ever touch Makefile.org and avoid patching a file
+	# that gets blown away anyways by the Configure script in src_configure
+	rm -f Makefile
+
+	if ! use vanilla ; then
+		PATCHES+=(
+			# Add patches which are Gentoo-specific customisations here
+		)
+	fi
+
+	default
+
+	if use test && use sctp && has network-sandbox ${FEATURES} ; then
+		einfo "Disabling test '80-test_ssl_new.t' which is known to fail with FEATURES=network-sandbox ..."
+		rm test/recipes/80-test_ssl_new.t || die
+	fi
+
+	# Test fails depending on kernel configuration, bug #699134
+	rm test/recipes/30-test_afalg.t || die
+}
+
+src_configure() {
+	# Keep this in sync with app-misc/c_rehash
+	SSL_CNF_DIR="/etc/ssl"
+
+	# Quiet out unknown driver argument warnings since openssl
+	# doesn't have well-split CFLAGS and we're making it even worse
+	# and 'make depend' uses -Werror for added fun (bug #417795 again)
+	tc-is-clang && append-flags -Qunused-arguments
+
+	# We really, really need to build OpenSSL w/ strict aliasing disabled.
+	# It's filled with violations and it *will* result in miscompiled
+	# code. This has been in the ebuild for > 10 years but even in 2022,
+	# it's still relevant:
+	# - https://github.com/llvm/llvm-project/issues/55255
+	# - https://github.com/openssl/openssl/issues/12247
+	# - https://github.com/openssl/openssl/issues/18225
+	# - https://github.com/openssl/openssl/issues/18663#issuecomment-1181478057
+	# Don't remove the no strict aliasing bits below!
+	filter-flags -fstrict-aliasing
+	append-flags -fno-strict-aliasing
+	# The OpenSSL developers don't test with LTO right now, it leads to various
+	# warnings/errors (which may or may not be false positives), it's considered
+	# unsupported, and it's not tested in CI: https://github.com/openssl/openssl/issues/18663.
+	filter-lto
+
+	append-flags $(test-flags-CC -Wa,--noexecstack)
+
+	# bug #895308
+	append-atomic-flags
+	# Configure doesn't respect LIBS
+	export LDLIBS="${LIBS}"
+
+	# bug #197996
+	unset APPS
+	# bug #312551
+	unset SCRIPTS
+	# bug #311473
+	unset CROSS_COMPILE
+
+	tc-export AR CC CXX RANLIB RC
+
+	multilib-minimal_src_configure
+}
+
+multilib_src_configure() {
+	use_ssl() { usex $1 "enable-${2:-$1}" "no-${2:-$1}" " ${*:3}" ; }
+
+	local krb5=$(has_version app-crypt/mit-krb5 && echo "MIT" || echo "Heimdal")
+
+	# See if our toolchain supports __uint128_t.  If so, it's 64bit
+	# friendly and can use the nicely optimized code paths, bug #460790.
+	#local ec_nistp_64_gcc_128
+	#
+	# Disable it for now though (bug #469976)
+	# Do NOT re-enable without substantial discussion first!
+	#
+	#echo "__uint128_t i;" > "${T}"/128.c
+	#if ${CC} ${CFLAGS} -c "${T}"/128.c -o /dev/null >&/dev/null ; then
+	#       ec_nistp_64_gcc_128="enable-ec_nistp_64_gcc_128"
+	#fi
+
+	local sslout=$(bash "${FILESDIR}/gentoo.config-1.0.4")
+	einfo "Using configuration: ${sslout:-(openssl knows best)}"
+
+	# https://github.com/openssl/openssl/blob/master/INSTALL.md#enable-and-disable-features
+	local myeconfargs=(
+		${sslout}
+
+		$(use cpu_flags_x86_sse2 || echo "no-sse2")
+		enable-camellia
+		enable-ec
+		enable-ec2m
+		enable-sm2
+		enable-srp
+		$(use elibc_musl && echo "no-async")
+		enable-idea
+		enable-mdc2
+		enable-rc5
+		$(use fips && echo "enable-fips")
+		$(use_ssl asm)
+		$(use_ssl ktls)
+		$(use_ssl rfc3779)
+		$(use_ssl sctp)
+		$(use test || echo "no-tests")
+		$(use_ssl tls-compression zlib)
+		$(use_ssl weak-ssl-ciphers)
+
+		--prefix="${EPREFIX}"/usr
+		--openssldir="${EPREFIX}"${SSL_CNF_DIR}
+		--libdir=$(get_libdir)
+
+		shared
+		threads
+	)
+
+	edo perl "${S}/Configure" "${myeconfargs[@]}"
+}
+
+multilib_src_compile() {
+	emake build_sw
+
+	if multilib_is_native_abi; then
+		emake build_docs
+	fi
+}
+
+multilib_src_test() {
+	# VFP = show subtests verbosely and show failed tests verbosely
+	# Normal V=1 would show everything verbosely but this slows things down.
+	emake HARNESS_JOBS="$(makeopts_jobs)" -Onone VFP=1 test
+}
+
+multilib_src_install() {
+	# Only -j1 is supported for the install targets:
+	# https://github.com/openssl/openssl/issues/21999#issuecomment-1771150305
+	emake DESTDIR="${D}" -j1 install_sw
+	if use fips; then
+		emake DESTDIR="${D}" -j1 install_fips
+		# Regen this in pkg_preinst, bug 900625
+		rm "${ED}${SSL_CNF_DIR}"/fipsmodule.cnf || die
+	fi
+
+	if multilib_is_native_abi; then
+		emake DESTDIR="${D}" -j1 install_ssldirs
+		emake DESTDIR="${D}" DOCDIR='$(INSTALLTOP)'/share/doc/${PF} -j1 install_docs
+	fi
+
+	# This is crappy in that the static archives are still built even
+	# when USE=static-libs. But this is due to a failing in the openssl
+	# build system: the static archives are built as PIC all the time.
+	# Only way around this would be to manually configure+compile openssl
+	# twice; once with shared lib support enabled and once without.
+	if ! use static-libs ; then
+		rm "${ED}"/usr/$(get_libdir)/lib{crypto,ssl}.a || die
+	fi
+}
+
+multilib_src_install_all() {
+	# openssl installs perl version of c_rehash by default, but
+	# we provide a shell version via app-misc/c_rehash
+	rm "${ED}"/usr/bin/c_rehash || die
+
+	dodoc {AUTHORS,CHANGES,NEWS,README,README-PROVIDERS}.md doc/*.txt doc/${PN}-c-indent.el
+
+	# Create the certs directory
+	keepdir ${SSL_CNF_DIR}/certs
+
+	# bug #254521
+	dodir /etc/sandbox.d
+	echo 'SANDBOX_PREDICT="/dev/crypto"' > "${ED}"/etc/sandbox.d/10openssl
+
+	diropts -m0700
+	keepdir ${SSL_CNF_DIR}/private
+}
+
+pkg_preinst() {
+	if use fips; then
+		# Regen fipsmodule.cnf, bug 900625
+		ebegin "Running openssl fipsinstall"
+		"${ED}/usr/bin/openssl" fipsinstall -quiet \
+			-out "${ED}${SSL_CNF_DIR}/fipsmodule.cnf" \
+			-module "${ED}/usr/$(get_libdir)/ossl-modules/fips.so"
+		eend $?
+	fi
+
+	preserve_old_lib /usr/$(get_libdir)/lib{crypto,ssl}$(get_libname 1) \
+		/usr/$(get_libdir)/lib{crypto,ssl}$(get_libname 1.1)
+}
+
+pkg_postinst() {
+	ebegin "Running 'openssl rehash ${EROOT}${SSL_CNF_DIR}/certs' to rebuild hashes (bug #333069)"
+	openssl rehash "${EROOT}${SSL_CNF_DIR}/certs"
+	eend $?
+
+	preserve_old_lib_notify /usr/$(get_libdir)/lib{crypto,ssl}$(get_libname 1) \
+		/usr/$(get_libdir)/lib{crypto,ssl}$(get_libname 1.1)
+}