CVE-2017-7763

Mozilla Firefox

MEDIUM 5.3

At a glance

Source: NVD
EPSS: EPSS 1.11 % · percentile 66 (2026-10-28)
State: PUBLISHED
Published: 2018-06-11 21:00 UTC
Updated: 2024-08-05 16:12 UTC
Assigner: mozilla
NVD status: Modified

Description

Default fonts on OS X display some Tibetan characters as whitespace. When used in the addressbar as part of an IDN this can be used for domain name spoofing attacks. Note: This attack only affects OS X operating systems. Other operating systems are unaffected. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.

Weaknesses (CWE)

CWE-20 — Improper Input Validation

References

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-2017-16738
GCVE · GCVE-0-2017-7763

CERT-FR advisories

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:*:*:*:*:*:*:*:* < 52.2.0
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* < 54.0
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* < 52.2.0
cpe: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