Tor Browser before 7.0.9 on macOS and Linux allows remote attackers to bypass the intended anonymity feature and discover a client IP address via vectors involving a crafted web site that leverages file:// mishandling in Firefox, aka TorMoil. NOTE: Tails is unaffected.
https://access.redhat.com/errata/RHSA-2018:2692
https://access.redhat.com/errata/RHSA-2018:2693
https://access.redhat.com/errata/RHSA-2018:3403
https://access.redhat.com/errata/RHSA-2018:3458
https://bugzilla.mozilla.org/show_bug.cgi?id=1412081
https://lists.debian.org/debian-lts-announce/2018/11/msg00011.html
https://security.gentoo.org/glsa/201810-01
https://security.gentoo.org/glsa/201811-13