llvm/llvm-dwarfdump-fuzzer: Heap-buffer-overflow in llvm::object::WasmObjectFile::parseCustomSection

2018-05-22T08:12:40
ID OSSFUZZ-8447
Type ossfuzz
Reporter Google
Modified 2019-02-14T22:43:16

Description

Project: https://github.com/llvm/llvm-project.git

Detailed report: https://oss-fuzz.com/testcase?key=4695303245529088

Project: llvm Fuzzer: libFuzzer_llvm_llvm-dwarfdump-fuzzer Fuzz target binary: llvm-dwarfdump-fuzzer Job Type: libfuzzer_asan_llvm Platform Id: linux

Crash Type: Heap-buffer-overflow READ 6 Crash Address: 0x60900000050b Crash State: llvm::object::WasmObjectFile::parseCustomSection llvm::object::WasmObjectFile::parseSection llvm::object::WasmObjectFile::WasmObjectFile

Sanitizer: address (ASAN)

Recommended Security Severity: Medium

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201708280446:201708291805

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=4695303245529088

Issue filed automatically.

See https://github.com/google/oss-fuzz/blob/master/docs/reproducing.md for more information.

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