wolfssl:fuzzer-wolfssl-server-randomize: Heap-buffer-overflow in fp_to_unsigned_bin_at_pos

2020-10-13T01:37:39
ID OSSFUZZ-26295
Type ossfuzz
Reporter Google
Modified 2020-11-21T19:55:56

Description

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

Detailed Report: https://oss-fuzz.com/testcase?key=5123165615030272

Project: wolfssl Fuzzing Engine: afl Fuzz Target: fuzzer-wolfssl-server-randomize Job Type: afl_asan_wolfssl Platform Id: linux

Crash Type: Heap-buffer-overflow WRITE 1 Crash Address: 0x602000001040 Crash State: fp_to_unsigned_bin_at_pos fp_to_unsigned_bin mp_to_unsigned_bin

Sanitizer: address (ASAN)

Recommended Security Severity: High

Regressed: https://oss-fuzz.com/revisions?job=afl_asan_wolfssl&range=202009220626:202009230602

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5123165615030272

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.