Domain name spoofing in Mozilla Firefox - CVE-2017-7825

Vulnerability identifier: #VU8625

CSH Severity: Medium

CVSS v4: 5.1 [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]

CVE-ID: CVE-2017-7825

CWE-ID: CWE-451

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform spoofing attack.

Several fonts on OS X display some Tibetan and Arabic 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.

Mozilla Firefox
Firefox ESR
Gentoo Linux
SUSE Linux
Mozilla Thunderbird

Update to version 56.0.

• https://www.mozilla.org/en-US/security/advisories/mfsa2017-21/

• Multiple vulnerabilities in Mozilla Firefox
• Multiple vulnerabilities in Firefox ESR
• Multiple vulnerabilities in Mozilla Thunderbird
• SUSE Linux update for MozillaFirefox
• SUSE Linux update for MozillaFirefox
• OpenSUSE Linux update for MozillaThunderbird
• OpenSUSE Linux update for MozillaThunderbird
• SUSE Linux update for MozillaFirefox
• Gentoo update for Mozilla Thunderbird