International Components for Unicode (ICU) for C/C++ before 2017-02-13 has an out-of-bounds write caused by a heap-based buffer overflow related to the utf8TextAccess function in common/utext.cpp and the utext_setNativeIndex* function.
http://bugs.icu-project.org/trac/changeset/39671
http://www.debian.org/security/2017/dsa-3830
http://www.securityfocus.com/bid/97672
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=213
https://security.gentoo.org/glsa/201710-03
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
Source: MITRE
Published: 2017-04-14
Updated: 2019-04-23
Type: CWE-787
Base Score: 5
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Impact Score: 2.9
Exploitability Score: 10
Severity: MEDIUM
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 3.9
Severity: HIGH