envoy:server_fuzz_test: Bad-cast to Envoy::Network::ActiveDnsQuery from invalid vptr in Envoy::Upstream::StrictDnsClusterImpl::ResolveTarget::~ResolveTarget

Type ossfuzz
Reporter Google
Modified 2020-03-21T18:54:46


Project: https://github.com/envoyproxy/envoy.git

Detailed Report: https://oss-fuzz.com/testcase?key=5157098222780416

Project: envoy Fuzzing Engine: libFuzzer Fuzz Target: server_fuzz_test Job Type: libfuzzer_ubsan_envoy Platform Id: linux

Crash Type: Bad-cast Crash Address: 0x0000128fb670 Crash State: Bad-cast to Envoy::Network::ActiveDnsQuery from invalid vptr Envoy::Upstream::StrictDnsClusterImpl::ResolveTarget::~ResolveTarget std::__1::default_delete<Envoy::Upstream::StrictDnsClusterImpl::ResolveTarget>::

Sanitizer: undefined (UBSAN)

Recommended Security Severity: High

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_ubsan_envoy&range=202002010319:202002060334

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5157098222780416

Issue filed automatically.

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This bug is subject to a 90 day disclosure deadline. If 90 days elapse without an upstream patch, then the bug report will automatically become visible to the public.