[ntp:security] Issue 27531 in oss-fuzz: ntp:fuzz_ntpd_receive: Abrt in std::__Fuzzer::__throw_system_error

ClusterFuzz-External via monorail monorail+v2.382749006 at chromium.org
Mon Nov 16 02:13:22 UTC 2020

Status: New
Owner: ----
CC: secur... at ntp.org, p.ant... at catenacyber.fr 
Labels: Restrict-View-Commit ClusterFuzz Stability-Memory-MemorySanitizer Unreproducible Engine-libfuzzer OS-Linux Proj-ntp Reported-2020-11-16
Type: Bug

New issue 27531 by ClusterFuzz-External: ntp:fuzz_ntpd_receive: Abrt in std::__Fuzzer::__throw_system_error

Detailed Report: https://oss-fuzz.com/testcase?key=5696644122935296

Project: ntp
Fuzzing Engine: libFuzzer
Fuzz Target: fuzz_ntpd_receive
Job Type: libfuzzer_msan_ntp
Platform Id: linux

Crash Type: Abrt
Crash Address: 0x00000000bd53
Crash State:
Sanitizer: memory (MSAN)

Crash Revision: https://oss-fuzz.com/revisions?job=libfuzzer_msan_ntp&revision=202010270611

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5696644122935296

Issue filed automatically.

See https://google.github.io/oss-fuzz/advanced-topics/reproducing for instructions to reproduce this bug locally.

************************* UNREPRODUCIBLE *************************
Note: This crash might not be reproducible with the provided testcase. That said, for the past 14 days, we've been seeing this crash frequently.

It may be possible to reproduce by trying the following options:
- Run testcase multiple times for a longer duration.
- Run fuzzing without testcase argument to hit the same crash signature.

If it still does not reproduce, try a speculative fix based on the crash stacktrace and verify if it works by looking at the crash statistics in the report. We will auto-close the bug if the crash is not seen for 14 days.
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.

If you need to contact the OSS-Fuzz team with a question, concern, or any other feedback, please file an issue at https://github.com/google/oss-fuzz/issues. Comments on individual Monorail issues are not monitored.

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.

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