Heap-based buffer overflow in the EscapeParenthesis function in GraphicsMagick before 1.3.25 allows remote attackers to have unspecified impact via unknown vectors.
http://lists.opensuse.org/opensuse-updates/2016-10/msg00094.html
http://lists.opensuse.org/opensuse-updates/2016-10/msg00097.html
https://bugzilla.redhat.com/show_bug.cgi?id=1374233
https://lists.debian.org/debian-lts-announce/2018/06/msg00009.html