CVE-2017-7832

MEDIUM

Firefox < 57 - Domain Spoofing via Unicode Dotless 'i' Character

Title source: llm

Description

The combined, single character, version of the letter 'i' with any of the potential accents in unicode, such as acute or grave, can be spoofed in the addressbar by the dotless version of 'i' followed by the same accent as a second character with most font sets. This allows for domain spoofing attacks because these combined domain names do not display as punycode. This vulnerability affects Firefox < 57.

References (4)

Core 4

Core References

Vendor Advisory x_refsource_confirm

https://www.mozilla.org/security/advisories/mfsa2017-24/

Third Party Advisory, VDB Entry vdb-entry x_refsource_bid

http://www.securityfocus.com/bid/101832

Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack

http://www.securitytracker.com/id/1039803

Issue Tracking, Permissions Required x_refsource_confirm

https://bugzilla.mozilla.org/show_bug.cgi?id=1408782

Scores

CVSS v3 5.3

EPSS 0.0098

EPSS Percentile 77.0%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Details

CWE

CWE-20

Status published

Products (1)

mozilla/firefox < 56.0.2

Published Jun 11, 2018

Tracked Since Feb 18, 2026