icu: Heap-buffer-overflow in utext_previous32_58

2016-12-02T16:57:19
ID OSSFUZZ-223
Type ossfuzz
Reporter Google
Modified 2019-06-21T17:04:07

Description

Project: https://github.com/unicode-org/icu.git

Detailed report: https://clusterfuzz-external.appspot.com/testcase?key=5560648738013184

Project: icu Fuzzer: libFuzzer_icu_ucasemap_fuzzer Fuzz target binary: ucasemap_fuzzer Job Type: libfuzzer_asan_icu Platform Id: linux

Crash Type: Heap-buffer-overflow READ 2 Crash Address: 0x6150000004e2 Crash State: utext_previous32_58 icu_58::RuleBasedBreakIterator::checkDictionary ucasemap_internalUTF8ToTitle_58

Recommended Security Severity: Medium

Minimized Testcase (0.84 Kb): https://clusterfuzz-external.appspot.com/download/AMIfv965Es6zq9k6A3OuHzAp-Oq2Gr26RSM42g9aFFzLjfy5jpgZiVGxG8oYiOVr2YnSG4eKTNFcbpOWWHWSyhdd-NsQ9utR5jn6kqiL245nQUC_JefqxS3iS4L0nEWLSygKJg5pWwXiMsD6WZl9DC5gUd7_3ab7qoAk-2UiIZcRE0TZsdtudcc?testcase_id=5560648738013184

Issue filed automatically.

See https://github.com/google/oss-fuzz/blob/master/docs/reproducing.md for more information.