Bug: ssue 47171 in oss-fuzz: assimp:assimp_fuzzer: Bad-cast to Assimp::D3DS::Material from invalid vptr in Assimp::ASE::Parser::ParseLV2MaterialBlock

[kimkulling]

Status: New Owner: ---- CC: kim.k...@googlemail.com Labels: Restrict-View-Commit ClusterFuzz Reproducible Stability-UndefinedBehaviorSanitizer Engine-libfuzzer OS-Linux Security_Severity-High Proj-assimp Reported-2022-05-01 Type: Bug-Security

New issue 47171 by ClusterFuzz-External: assimp:assimp_fuzzer: Bad-cast to Assimp::D3DS::Material from invalid vptr in Assimp::ASE::Parser::ParseLV2MaterialBlock https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=47171

Detailed Report: https://oss-fuzz.com/testcase?key=5921493454815232

Project: assimp Fuzzing Engine: libFuzzer Fuzz Target: assimp_fuzzer Job Type: libfuzzer_ubsan_assimp Platform Id: linux

Crash Type: Bad-cast Crash Address: 0x7f9305060a70 Crash State: Bad-cast to Assimp::D3DS::Material from invalid vptr Assimp::ASE::Parser::ParseLV2MaterialBlock Assimp::ASE::Parser::ParseLV1MaterialListBlock

Sanitizer: undefined (UBSAN)

Recommended Security Severity: High

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_ubsan_assimp&range=202105110609:202105120614

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5921493454815232

Issue filed automatically.

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