CVE-2019-11721

Public Exploit

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.

6.5

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.44%

Vendor Advisory gentoo.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org

Affected: Mozilla Firefox

References

Link	Tags
https://www.mozilla.org/security/advisories/mfsa2019-21/	vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1256009	issue tracking exploit vendor advisory
https://security.gentoo.org/glsa/201908-12	third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html	mailing list third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html	mailing list third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html	mailing list third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.html	mailing list third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-11721?: CVE-2019-11721 has been scored as a medium severity vulnerability.
How to fix CVE-2019-11721?: To fix CVE-2019-11721, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-11721 being actively exploited in the wild?: It is possible that CVE-2019-11721 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-11721?: CVE-2019-11721 affects Mozilla Firefox.

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