CVE-2017-7764
Mozilla Firefox
MEDIUM 5.3
At a glance
- Source
- NVD
- EPSS
- EPSS 1.96 % · percentile 80 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- mozilla
- NVD status
- Modified
Description
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.
Weaknesses (CWE)
- CWE-20 — Improper Input Validation
References
- 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/
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.0 | MEDIUM 5.3 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | MEDIUM 5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2017-16739
- GCVE · GCVE-0-2017-7764
CERT-FR advisories
- CERTFR-2017-AVI-231 — Multiples vulnérabilités dans Oracle VM Server pour x86 et Oracle Linux · cert.ssi.gouv.fr
- CERTFR-2017-AVI-182 — Multiples vulnérabilités dans Mozilla Thunderbird · cert.ssi.gouv.fr
- CERTFR-2017-AVI-174 — Multiples vulnérabilités dans Mozilla Firefox · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*< 52.2.0cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*< 54.0cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*< 52.2.0cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Mozilla · Firefox | affected unspecified < 54 |
| Mozilla · Firefox ESR | affected unspecified < 52.2 |
| Mozilla · Thunderbird | affected unspecified < 52.2 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |