LibreOffice before 2017-01-02 has an out-of-bounds write caused by a heap-based buffer overflow related to the tools::Polygon::Insert function in tools/source/generic/poly.cxx.
http://www.debian.org/security/2017/dsa-3837
http://www.libreoffice.org/about-us/security/advisories/cve-2017-7870/
http://www.securityfocus.com/bid/97671
http://www.securitytracker.com/id/1039029
https://access.redhat.com/errata/RHSA-2017:1975
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=372
https://github.com/LibreOffice/core/commit/62a97e6a561ce65e88d4c537a1b82c336f012722
Source: MITRE
Published: 2017-04-14
Updated: 2018-01-05
Type: CWE-787
Base Score: 7.5
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Impact Score: 6.4
Exploitability Score: 10
Severity: HIGH
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 3.9
Severity: CRITICAL