A vulnerability was discovered in SPICE before version 0.14.1 where the generated code used for demarshalling messages lacked sufficient bounds checks. A malicious client or server, after authentication, could send specially crafted messages to its peer which would result in a crash or, potentially, other impacts.
https://www.debian.org/security/2018/dsa-4319
https://usn.ubuntu.com/3751-1/
https://lists.debian.org/debian-lts-announce/2018/08/msg00038.html
https://lists.debian.org/debian-lts-announce/2018/08/msg00037.html
https://lists.debian.org/debian-lts-announce/2018/08/msg00035.html
https://gitlab.freedesktop.org/spice/spice-common/commit/bb15d4815ab586b4c4a20f4a565970a44824c42c
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10873
https://access.redhat.com/errata/RHSA-2018:3470
https://access.redhat.com/errata/RHSA-2018:2732