yara:rules_fuzzer: Use-of-uninitialized-value in _yr_arena_allocate_memory

Type ossfuzz
Reporter Google
Modified 2020-04-18T20:01:37


Project: https://github.com/VirusTotal/yara.git

Detailed Report: https://oss-fuzz.com/testcase?key=5678411302567936

Project: yara Fuzzing Engine: libFuzzer Fuzz Target: rules_fuzzer Job Type: libfuzzer_msan_yara Platform Id: linux

Crash Type: Use-of-uninitialized-value Crash Address: Crash State: _yr_arena_allocate_memory yr_arena_write_data yr_parser_reduce_meta_declaration

Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_msan_yara&range=202003120353:202003170143

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5678411302567936

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.