Spoofing attack in Mozilla Firefox - CVE-2017-7832
Published: November 15, 2017
Vulnerability identifier: #VU9319
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2017-7832
CWE-ID: CWE-451
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Mozilla
Affected software:
Mozilla Firefox
Mozilla Firefox
Detailed vulnerability description
The vulnerability allows a remote attacker to spoof domain names.
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.
A remote attacker can successfully perform a spoofing attack against domains with letter 'i.
How to mitigate CVE-2017-7832
Update to version Firefox 57.