If right-to-left text is used in the addressbar with left-to-right alignment, it is possible in some circumstances to scroll this text to spoof the displayed URL. This issue could result in the wrong URL being displayed as a location, which can mislead users to believe they are on a different site than the one loaded. This vulnerability affects Thunderbird < 52.6, Firefox ESR < 52.6, and Firefox < 58.
http://www.securityfocus.com/bid/102783
http://www.securitytracker.com/id/1040270
https://access.redhat.com/errata/RHSA-2018:0122
https://access.redhat.com/errata/RHSA-2018:0262
https://bugzilla.mozilla.org/show_bug.cgi?id=1395508
https://lists.debian.org/debian-lts-announce/2018/01/msg00030.html
https://lists.debian.org/debian-lts-announce/2018/01/msg00036.html
https://usn.ubuntu.com/3544-1/
https://www.debian.org/security/2018/dsa-4096
https://www.debian.org/security/2018/dsa-4102
https://www.mozilla.org/security/advisories/mfsa2018-02/
Source: MITRE
Published: 2018-06-11
Updated: 2019-10-03
Type: NVD-CWE-noinfo
Base Score: 5
Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N
Impact Score: 2.9
Exploitability Score: 10
Severity: MEDIUM
Base Score: 5.3
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Impact Score: 1.4
Exploitability Score: 3.9
Severity: MEDIUM