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server: reorder SecretManagerImpl field to avoid heap-after-use in te…
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…ardown. (#4940)

server_fuzz_test indicated the below crash, where the DispatcherImpl teardown
releases some upstream client SSL related objects that then needs
SecretManagerImpl to unregister. Previously, this was already destructed by
time we were in ~DispatcherImpl(), this PR reorders.

    #0 0xc1e826 in size /usr/local/include/c++/v1/__hash_table:809:55
    #1 0xc1e826 in bucket_count /usr/local/include/c++/v1/__hash_table:1197
    #2 0xc1e826 in std::__1::__hash_iterator<std::__1::__hash_node<std::__1::__hash_value_type<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::weak_ptr<Envoy::Secret::TlsCertificateSdsApi> >, void*>*> std::__1::__hash_table<std::__1::__hash_value_type<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::weak_ptr<Envoy::Secret::TlsCertificateSdsApi> >, std::__1::__unordered_map_hasher<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::__hash_value_type<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::weak_ptr<Envoy::Secret::TlsCertificateSdsApi> >, std::__1::hash<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > >, true>, std::__1::__unordered_map_equal<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::__hash_value_type<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::weak_ptr<Envoy::Secret::TlsCertificateSdsApi> >, std::__1::equal_to<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > >, true>, std::__1::allocator<std::__1::__hash_value_type<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::weak_ptr<Envoy::Secret::TlsCertificateSdsApi> > > >::find<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > >(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) /usr/local/include/c++/v1/__hash_table:2334
    #3 0xc1e278 in unsigned long std::__1::__hash_table<std::__1::__hash_value_type<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::weak_ptr<Envoy::Secret::TlsCertificateSdsApi> >, std::__1::__unordered_map_hasher<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::__hash_value_type<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::weak_ptr<Envoy::Secret::TlsCertificateSdsApi> >, std::__1::hash<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > >, true>, std::__1::__unordered_map_equal<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::__hash_value_type<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::weak_ptr<Envoy::Secret::TlsCertificateSdsApi> >, std::__1::equal_to<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > >, true>, std::__1::allocator<std::__1::__hash_value_type<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::weak_ptr<Envoy::Secret::TlsCertificateSdsApi> > > >::__erase_unique<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > >(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) /usr/local/include/c++/v1/__hash_table:2510:20
    #4 0xc1def6 in erase /usr/local/include/c++/v1/unordered_map:1156:59
    #5 0xc1def6 in Envoy::Secret::SecretManagerImpl::DynamicSecretProviders<Envoy::Secret::TlsCertificateSdsApi>::removeDynamicSecretProvider(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) /bazel-out/k8-fastbuild/bin/source/common/secret/_virtual_includes/secret_manager_impl_lib/common/secret/secret_manager_impl.h:75
    #6 0x724aa9 in Envoy::Cleanup::~Cleanup() /bazel-out/k8-fastbuild/bin/source/common/common/_virtual_includes/cleanup_lib/common/common/cleanup.h:11:16
    #7 0xc1ff33 in Envoy::Secret::SdsApi::~SdsApi() /bazel-out/k8-fastbuild/bin/source/common/secret/_virtual_includes/sds_api_lib/common/secret/sds_api.h:29:7
    #8 0xc188a0 in __release_shared /usr/local/include/c++/v1/memory:3530:9
    #9 0xc188a0 in __release_shared /usr/local/include/c++/v1/memory:3572
    #10 0xc188a0 in std::__1::shared_ptr<Envoy::Secret::SecretProvider<Envoy::Ssl::TlsCertificateConfig> >::~shared_ptr() /usr/local/include/c++/v1/memory:4508
    #11 0x149c922 in Envoy::Ssl::ContextConfigImpl::~ContextConfigImpl() /source/common/ssl/context_config_impl.cc:117:1
    #12 0x14a0d8f in Envoy::Ssl::ClientContextConfigImpl::~ClientContextConfigImpl() /bazel-out/k8-fastbuild/bin/source/common/ssl/_virtual_includes/context_config_lib/common/ssl/context_config_impl.h:91:7
    #13 0x14a0dc8 in Envoy::Ssl::ClientContextConfigImpl::~ClientContextConfigImpl() /bazel-out/k8-fastbuild/bin/source/common/ssl/_virtual_includes/context_config_lib/common/ssl/context_config_impl.h:91:7
    #14 0x149815b in operator() /usr/local/include/c++/v1/memory:2325:5
    #15 0x149815b in reset /usr/local/include/c++/v1/memory:2638
    #16 0x149815b in ~unique_ptr /usr/local/include/c++/v1/memory:2592
    #17 0x149815b in Envoy::Ssl::ClientSslSocketFactory::~ClientSslSocketFactory() /bazel-out/k8-fastbuild/bin/source/common/ssl/_virtual_includes/ssl_socket_lib/common/ssl/ssl_socket.h:83
    #18 0x14981c8 in Envoy::Ssl::ClientSslSocketFactory::~ClientSslSocketFactory() /bazel-out/k8-fastbuild/bin/source/common/ssl/_virtual_includes/ssl_socket_lib/common/ssl/ssl_socket.h:83:7
    #19 0x1362caf in operator() /usr/local/include/c++/v1/memory:2325:5
    #20 0x1362caf in reset /usr/local/include/c++/v1/memory:2638
    #21 0x1362caf in ~unique_ptr /usr/local/include/c++/v1/memory:2592
    #22 0x1362caf in Envoy::Upstream::ClusterInfoImpl::~ClusterInfoImpl() /bazel-out/k8-fastbuild/bin/source/common/upstream/_virtual_includes/upstream_includes/common/upstream/upstream_impl.h:362
    #23 0x1362d28 in Envoy::Upstream::ClusterInfoImpl::~ClusterInfoImpl() /bazel-out/k8-fastbuild/bin/source/common/upstream/_virtual_includes/upstream_includes/common/upstream/upstream_impl.h:362:7
    #24 0x66e560 in __release_shared /usr/local/include/c++/v1/memory:3530:9
    #25 0x66e560 in __release_shared /usr/local/include/c++/v1/memory:3572
    #26 0x66e560 in std::__1::shared_ptr<Envoy::Upstream::ClusterInfo const>::~shared_ptr() /usr/local/include/c++/v1/memory:4508
    #27 0x13621bf in Envoy::Upstream::HostImpl::~HostImpl() /bazel-out/k8-fastbuild/bin/source/common/upstream/_virtual_includes/upstream_includes/common/upstream/upstream_impl.h:156:7
    #28 0x13621f8 in Envoy::Upstream::HostImpl::~HostImpl() /bazel-out/k8-fastbuild/bin/source/common/upstream/_virtual_includes/upstream_includes/common/upstream/upstream_impl.h:156:7
    #29 0x66e650 in __release_shared /usr/local/include/c++/v1/memory:3530:9
    #30 0x66e650 in __release_shared /usr/local/include/c++/v1/memory:3572
    #31 0x66e650 in std::__1::shared_ptr<Envoy::Upstream::HostDescription const>::~shared_ptr() /usr/local/include/c++/v1/memory:4508
    #32 0x13b20c3 in Envoy::Http::CodecClient::~CodecClient() /source/common/http/codec_client.cc:38:30
    #33 0x13b2258 in Envoy::Http::CodecClientProd::~CodecClientProd() /bazel-out/k8-fastbuild/bin/source/common/http/_virtual_includes/codec_client_lib/common/http/codec_client.h:229:7
    #34 0x751de6 in operator() /usr/local/include/c++/v1/memory:2325:5
    #35 0x751de6 in reset /usr/local/include/c++/v1/memory:2638
    #36 0x751de6 in ~unique_ptr /usr/local/include/c++/v1/memory:2592
    #37 0x751de6 in destroy /usr/local/include/c++/v1/memory:1867
    #38 0x751de6 in __destroy<std::__1::unique_ptr<Envoy::Event::DeferredDeletable, std::__1::default_delete<Envoy::Event::DeferredDeletable> > > /usr/local/include/c++/v1/memory:1729
    #39 0x751de6 in destroy<std::__1::unique_ptr<Envoy::Event::DeferredDeletable, std::__1::default_delete<Envoy::Event::DeferredDeletable> > > /usr/local/include/c++/v1/memory:1597
    #40 0x751de6 in __destruct_at_end /usr/local/include/c++/v1/vector:422
    #41 0x751de6 in clear /usr/local/include/c++/v1/vector:365
    #42 0x751de6 in std::__1::__vector_base<std::__1::unique_ptr<Envoy::Event::DeferredDeletable, std::__1::default_delete<Envoy::Event::DeferredDeletable> >, std::__1::allocator<std::__1::unique_ptr<Envoy::Event::DeferredDeletable, std::__1::default_delete<Envoy::Event::DeferredDeletable> > > >::~__vector_base() /usr/local/include/c++/v1/vector:459
    #43 0x74d1aa in ~vector /usr/local/include/c++/v1/vector:551:5
    #44 0x74d1aa in Envoy::Event::DispatcherImpl::~DispatcherImpl() /source/common/event/dispatcher_impl.cc:41
    #45 0x74d658 in Envoy::Event::DispatcherImpl::~DispatcherImpl() /source/common/event/dispatcher_impl.cc:41:35
    #46 0x697b76 in operator() /usr/local/include/c++/v1/memory:2325:5
    #47 0x697b76 in reset /usr/local/include/c++/v1/memory:2638
    #48 0x697b76 in ~unique_ptr /usr/local/include/c++/v1/memory:2592
    #49 0x697b76 in Envoy::Server::InstanceImpl::InstanceImpl(Envoy::Server::Options&, Envoy::Event::TimeSystem&, std::__1::shared_ptr<Envoy::Network::Address::Instance const>, Envoy::TestHooks&, Envoy::Server::HotRestart&, Envoy::Stats::StoreRoot&, Envoy::Thread::BasicLockable&, Envoy::Server::ComponentFactory&, std::__1::unique_ptr<Envoy::Runtime::RandomGenerator, std::__1::default_delete<Envoy::Runtime::RandomGenerator> >&&, Envoy::ThreadLocal::Instance&) /source/server/server.cc:92
    #50 0x586026 in make_unique<Envoy::Server::InstanceImpl, testing::NiceMock<Envoy::Server::MockOptions> &, Envoy::Event::TestTimeSystem &, std::__1::shared_ptr<Envoy::Network::Address::Ipv4Instance>, Envoy::DefaultTestHooks &, testing::NiceMock<Envoy::Server::MockHotRestart> &, Envoy::Stats::TestIsolatedStoreImpl &, Envoy::Thread::MutexBasicLockable &, Envoy::Server::TestComponentFactory &, std::__1::unique_ptr<Envoy::Runtime::RandomGeneratorImpl, std::__1::default_delete<Envoy::Runtime::RandomGeneratorImpl> >, Envoy::ThreadLocal::InstanceImpl &> /usr/local/include/c++/v1/memory:3118:32
    #51 0x586026 in Envoy::Server::TestOneProtoInput(envoy::config::bootstrap::v2::Bootstrap const&) /test/server/server_fuzz_test.cc:78

Fixes oss-fuzz issue https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=11231

Risk Level: Low
Testing: Corpus entry added. It's pretty hard to build regressions for this
  kind of destruction ordering, so relying on server_fuzz_test + corpus.

Signed-off-by: Harvey Tuch <[email protected]>
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@htuch
htuch authored Nov 1, 2018
1 parent 688793a commit 871155f
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Showing 3 changed files with 5 additions and 4 deletions.
6 changes: 3 additions & 3 deletions source/server/server.cc
View file
Original file line number Diff line number Diff line change
Expand Up @@ -52,12 +52,12 @@ InstanceImpl::InstanceImpl(Options& options, Event::TimeSystem& time_system,
: options_(options), time_system_(time_system), restarter_(restarter),
start_time_(time(nullptr)), original_start_time_(start_time_), stats_store_(store),
thread_local_(tls), api_(new Api::Impl(options.fileFlushIntervalMsec())),
secret_manager_(std::make_unique<Secret::SecretManagerImpl>()),
dispatcher_(api_->allocateDispatcher(time_system)),
singleton_manager_(new Singleton::ManagerImpl()),
handler_(new ConnectionHandlerImpl(ENVOY_LOGGER(), *dispatcher_)),
random_generator_(std::move(random_generator)),
secret_manager_(std::make_unique<Secret::SecretManagerImpl>()),
listener_component_factory_(*this), worker_factory_(thread_local_, *api_, hooks, time_system),
random_generator_(std::move(random_generator)), listener_component_factory_(*this),
worker_factory_(thread_local_, *api_, hooks, time_system),
dns_resolver_(dispatcher_->createDnsResolver({})),
access_log_manager_(*api_, *dispatcher_, access_log_lock, store), terminated_(false) {

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2 changes: 1 addition & 1 deletion source/server/server.h
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Original file line number Diff line number Diff line change
Expand Up @@ -205,13 +205,13 @@ class InstanceImpl : Logger::Loggable<Logger::Id::main>, public Instance {
std::unique_ptr<ServerStats> server_stats_;
ThreadLocal::Instance& thread_local_;
Api::ApiPtr api_;
std::unique_ptr<Secret::SecretManager> secret_manager_;
Event::DispatcherPtr dispatcher_;
std::unique_ptr<AdminImpl> admin_;
Singleton::ManagerPtr singleton_manager_;
Network::ConnectionHandlerPtr handler_;
Runtime::RandomGeneratorPtr random_generator_;
Runtime::LoaderPtr runtime_loader_;
std::unique_ptr<Secret::SecretManager> secret_manager_;
std::unique_ptr<Ssl::ContextManagerImpl> ssl_context_manager_;
ProdListenerComponentFactory listener_component_factory_;
ProdWorkerFactory worker_factory_;
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1 change: 1 addition & 0 deletions test/server/server_corpus/clusterfuzz-testcase-minimized-server_fuzz_test-5761881319407616
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
node { id: " " cluster: " " } static_resources { clusters { name: " " connect_timeout { nanos: 4 } hosts { pipe { } } health_checks { timeout { nanos: 4 } interval { nanos: 4 } unhealthy_threshold { } healthy_threshold { } grpc_health_check { } } tls_context { common_tls_context { tls_certificate_sds_secret_configs { sds_config { path: "" } } } } http2_protocol_options { } } }

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