CVE-2019-11721 Information

Description

The unicode latin ‘kra’ character can be used to spoof a standard ‘k’ character in the addressbar. This allows for domain spoofing attacks as do not display as punycode text allowing for user confusion. This vulnerability affects Firefox 68.

CVSS Vector

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

Reference

http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.html https://bugzilla.mozilla.org/show_bug.cgi?id=1256009 https://security.gentoo.org/glsa/201908-12 https://www.mozilla.org/security/advisories/mfsa2019-21/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

6.5