opensc:fuzz_pkcs15_reader: Heap-buffer-overflow in bebytes2ushort

2019-10-27T23:41:22
ID OSSFUZZ-18576
Type ossfuzz
Reporter Google
Modified 2019-12-06T16:40:50

Description

Project: https://github.com/OpenSC/OpenSC.git

Detailed Report: https://oss-fuzz.com/testcase?key=5645369371525120

Project: opensc Fuzzing Engine: libFuzzer Fuzz Target: fuzz_pkcs15_reader Job Type: libfuzzer_asan_opensc Platform Id: linux

Crash Type: Heap-buffer-overflow READ 1 Crash Address: 0x6030000002f1 Crash State: bebytes2ushort coolkey_v1_get_attribute_len coolkey_v1_get_attribute_record_len

Sanitizer: address (ASAN)

Recommended Security Severity: Medium

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_asan_opensc&range=201910250207:201910260206

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5645369371525120

Issue filed automatically.

See https://google.github.io/oss-fuzz/advanced-topics/reproducing for instructions to reproduce this bug locally. When you fix this bug, please * mention the fix revision(s). * state whether the bug was a short-lived regression or an old bug in any stable releases. * add any other useful information. This information can help downstream consumers.

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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.