CVE-2017-7764
CVE-2017-7764
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Characters from the "Canadian Syllabics" unicode block can be mixed with characters from other unicode blocks in the addressbar instead of being rendered as their raw "punycode" form, allowing for domain name spoofing attacks through character confusion. The current Unicode standard allows characters from "Aspirational Use Scripts" such as Canadian Syllabics to be mixed with Latin characters in the "moderately restrictive" IDN profile. We have changed Firefox behavior to match the upcoming Unicode version 10.0 which removes this category and treats them as "Limited Use Scripts.". This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.
CVSS 5.3 · Medium · EPSS 2.0% · Fix available
- Published
- Updated
Stack: system
Affected products and versions
firefox
- Versions
- ≥ unspecified, < 54: Affected (custom)
Update to 54
firefox esr
- Versions
- ≥ unspecified, < 52.2: Affected (custom)
Update to 52.2
thunderbird
- Versions
- ≥ unspecified, < 52.2: Affected (custom)
Update to 52.2
firefox-esr Debian:12
- Affected ranges
- ECOSYSTEM: < 52.2.0esr-1
Update to 52.2.0esr-1
firefox-esr Debian:13
- Affected ranges
- ECOSYSTEM: < 52.2.0esr-1
Update to 52.2.0esr-1
firefox-esr Debian:14
- Affected ranges
- ECOSYSTEM: < 52.2.0esr-1
Update to 52.2.0esr-1
firefox Ubuntu:14.04:LTS
- Versions
- 24.0+build1-0ubuntu1
- 25.0+build3-0ubuntu0.13.10.1
- 28.0~b2+build1-0ubuntu2
- 28.0+build1-0ubuntu1
- 28.0+build2-0ubuntu1
- 28.0+build2-0ubuntu2
- 29.0+build1-0ubuntu0.14.04.2
- 30.0+build1-0ubuntu0.14.04.3
- 31.0+build1-0ubuntu0.14.04.1
- 32.0+build1-0ubuntu0.14.04.1
- 32.0.3+build1-0ubuntu0.14.04.1
- 33.0+build2-0ubuntu0.14.04.1
- 34.0+build2-0ubuntu0.14.04.1
- 35.0+build3-0ubuntu0.14.04.2
- 35.0.1+build1-0ubuntu0.14.04.1
- 36.0+build2-0ubuntu0.14.04.4
- 36.0.1+build2-0ubuntu0.14.04.1
- 36.0.4+build1-0ubuntu0.14.04.1
- 37.0+build2-0ubuntu0.14.04.1
- 37.0.1+build1-0ubuntu0.14.04.1
- 37.0.2+build1-0ubuntu0.14.04.1
- 38.0+build3-0ubuntu0.14.04.1
- 39.0+build5-0ubuntu0.14.04.1
- 39.0.3+build2-0ubuntu0.14.04.1
- 40.0+build4-0ubuntu0.14.04.1
- 40.0+build4-0ubuntu0.14.04.4
- 40.0.3+build1-0ubuntu0.14.04.1
- 41.0+build3-0ubuntu0.14.04.1
- 41.0.1+build2-0ubuntu0.14.04.1
- 41.0.2+build2-0ubuntu0.14.04.1
- 42.0+build2-0ubuntu0.14.04.1
- 43.0+build1-0ubuntu0.14.04.1
- 43.0.4+build3-0ubuntu0.14.04.1
- 44.0+build3-0ubuntu0.14.04.1
- 44.0.1+build2-0ubuntu0.14.04.1
- 44.0.2+build1-0ubuntu0.14.04.1
- 45.0+build2-0ubuntu0.14.04.1
- 45.0.1+build1-0ubuntu0.14.04.2
- 45.0.2+build1-0ubuntu0.14.04.1
- 46.0+build5-0ubuntu0.14.04.2
- 46.0.1+build1-0ubuntu0.14.04.3
- 47.0+build3-0ubuntu0.14.04.1
- 48.0+build2-0ubuntu0.14.04.1
- 49.0+build4-0ubuntu0.14.04.1
- 49.0.2+build2-0ubuntu0.14.04.1
- 50.0+build2-0ubuntu0.14.04.2
- 50.0.2+build1-0ubuntu0.14.04.1
- 50.1.0+build2-0ubuntu0.14.04.1
- 51.0.1+build2-0ubuntu0.14.04.1
- 51.0.1+build2-0ubuntu0.14.04.2
- 52.0+build2-0ubuntu0.14.04.1
- 52.0.1+build2-0ubuntu0.14.04.1
- 52.0.2+build1-0ubuntu0.14.04.1
- 53.0+build6-0ubuntu0.14.04.1
- 53.0.2+build1-0ubuntu0.14.04.2
- 53.0.3+build1-0ubuntu0.14.04.2
- Affected ranges
- ECOSYSTEM: < 54.0+build3-0ubuntu0.14.04.1
Update to 54.0+build3-0ubuntu0.14.04.1
thunderbird Ubuntu:14.04:LTS
- Versions
- 1:24.0+build1-0ubuntu1
- 1:24.0+build1-0ubuntu2
- 1:24.1.1+build1-0ubuntu0.13.10.1
- 1:24.1.1+build1-0ubuntu1
- 1:24.2.0+build1-0ubuntu1
- 1:24.4.0+build1-0ubuntu1
- 1:24.5.0+build1-0ubuntu0.14.04.1
- 1:24.6.0+build1-0ubuntu0.14.04.1
- 1:31.0+build1-0ubuntu0.14.04.1
- 1:31.1.1+build1-0ubuntu0.14.04.1
- 1:31.1.2+build1-0ubuntu0.14.04.1
- 1:31.2.0+build2-0ubuntu0.14.04.1
- 1:31.3.0+build1-0ubuntu0.14.04.1
- 1:31.4.0+build1-0ubuntu0.14.04.1
- 1:31.5.0+build1-0ubuntu0.14.04.1
- 1:31.6.0+build1-0ubuntu0.14.04.1
- 1:31.7.0+build1-0ubuntu0.14.04.1
- 1:31.8.0+build1-0ubuntu0.14.04.1
- 1:38.2.0+build1-0ubuntu0.14.04.1
- 1:38.3.0+build1-0ubuntu0.14.04.1
- 1:38.4.0+build3-0ubuntu0.14.04.1
- 1:38.5.1+build2-0ubuntu0.14.04.1
- 1:38.6.0+build1-0ubuntu0.14.04.1
- 1:38.7.2+build1-0ubuntu0.14.04.1
- 1:38.8.0+build1-0ubuntu0.14.04.1
- 1:45.2.0+build1-0ubuntu0.14.04.3
- 1:45.3.0+build1-0ubuntu0.14.04.4
- 1:45.4.0+build1-0ubuntu0.14.04.1
- 1:45.5.1+build1-0ubuntu0.14.04.1
- 1:45.7.0+build1-0ubuntu0.14.04.1
- 1:45.8.0+build1-0ubuntu0.14.04.1
- 1:52.1.1+build1-0ubuntu0.14.04.1
- Affected ranges
- ECOSYSTEM: < 1:52.2.1+build1-0ubuntu0.14.04.1
Update to 1:52.2.1+build1-0ubuntu0.14.04.1
firefox Ubuntu:16.04:LTS
- Versions
- 41.0.2+build2-0ubuntu1
- 42.0+build2-0ubuntu1
- 44.0+build3-0ubuntu2
- 44.0.1+build1-0ubuntu1
- 44.0.2+build1-0ubuntu1
- 45.0+build2-0ubuntu1
- 45.0.1+build1-0ubuntu1
- 45.0.2+build1-0ubuntu1
- 46.0+build5-0ubuntu0.16.04.2
- 46.0.1+build1-0ubuntu0.16.04.2
- 47.0+build3-0ubuntu0.16.04.1
- 48.0+build2-0ubuntu0.16.04.1
- 49.0+build4-0ubuntu0.16.04.1
- 49.0.2+build2-0ubuntu0.16.04.2
- 50.0+build2-0ubuntu0.16.04.2
- 50.0.2+build1-0ubuntu0.16.04.1
- 50.1.0+build2-0ubuntu0.16.04.1
- 51.0.1+build2-0ubuntu0.16.04.1
- 51.0.1+build2-0ubuntu0.16.04.2
- 52.0+build2-0ubuntu0.16.04.1
- 52.0.1+build2-0ubuntu0.16.04.1
- 52.0.2+build1-0ubuntu0.16.04.1
- 53.0+build6-0ubuntu0.16.04.1
- 53.0.2+build1-0ubuntu0.16.04.2
- 53.0.3+build1-0ubuntu0.16.04.2
- Affected ranges
- ECOSYSTEM: < 54.0+build3-0ubuntu0.16.04.1
Update to 54.0+build3-0ubuntu0.16.04.1
thunderbird Ubuntu:16.04:LTS
- Versions
- 1:38.3.0+build1-0ubuntu2
- 1:38.5.1+build2-0ubuntu1
- 1:38.6.0+build1-0ubuntu1
- 1:38.7.2+build1-0ubuntu0.16.04.1
- 1:38.8.0+build1-0ubuntu0.16.04.1
- 1:45.2.0+build1-0ubuntu0.16.04.1
- 1:45.3.0+build1-0ubuntu0.16.04.2
- 1:45.4.0+build1-0ubuntu0.16.04.1
- 1:45.5.1+build1-0ubuntu0.16.04.1
- 1:45.7.0+build1-0ubuntu0.16.04.1
- 1:45.8.0+build1-0ubuntu0.16.04.1
- 1:52.1.1+build1-0ubuntu0.16.04.1
- Affected ranges
- ECOSYSTEM: < 1:52.2.1+build1-0ubuntu0.16.04.1
Update to 1:52.2.1+build1-0ubuntu0.16.04.1
Original sources
- http://www.securityfocus.com/bid/99057
- http://www.unicode.org/reports/tr31/tr31-26.html#Aspirational_Use_Scripts
- https://www.mozilla.org/security/advisories/mfsa2017-15/
- https://www.debian.org/security/2017/dsa-3918
- http://www.securitytracker.com/id/1038689
- https://bugzilla.mozilla.org/show_bug.cgi?id=1364283
- https://www.debian.org/security/2017/dsa-3881
- https://access.redhat.com/errata/RHSA-2017:1440
- https://access.redhat.com/errata/RHSA-2017:1561
- https://www.mozilla.org/security/advisories/mfsa2017-17/
- https://www.mozilla.org/security/advisories/mfsa2017-16/
- https://nvd.nist.gov/vuln/detail/CVE-2017-7764