gnupg/fuzz_verify: Heap-use-after-free in proc_plaintext

2019-03-15T04:00:46
ID OSSFUZZ-13730
Type ossfuzz
Reporter Google
Modified 2019-04-15T15:25:02

Description

Project: git://git.gnupg.org/gnupg.git

Detailed report: https://oss-fuzz.com/testcase?key=5697816893063168

Project: gnupg Fuzzer: libFuzzer_gnupg_fuzz_verify Fuzz target binary: fuzz_verify Job Type: libfuzzer_asan_gnupg Platform Id: linux

Crash Type: Heap-use-after-free READ 4 Crash Address: 0x6120000007dc Crash State: proc_plaintext do_proc_packets proc_signature_packets

Sanitizer: address (ASAN)

Recommended Security Severity: High

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_asan_gnupg&range=201903140324:201903150247

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5697816893063168

Issue filed automatically.

See https://github.com/google/oss-fuzz/blob/master/docs/reproducing.md for instructions to reproduce this bug locally.

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.

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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