Provide references for CVE-2017-9780.
Where can I find more information about CVE-2017-9780?
References are available at: https://github.com/flatpak/flatpak/issues/845, https://bugs.debian.org/865413, http://www.securityfocus.com/bid/99346, http://www.debian.org/security/2017/dsa-3895.