CVE-2018-12403

Description

If a site is loaded over a HTTPS connection but loads a favicon resource over HTTP, the mixed content warning is not displayed to users. This vulnerability affects Firefox < 63.

5.3

CVSS

Severity: Medium

CVSS 3.0 •

CVSS 2.0 •

EPSS 1.51% Top 20%

Vendor Advisory ubuntu.com Vendor Advisory mozilla.org Vendor Advisory mozilla.org

Affected: Mozilla Firefox

References

Link	Tags
https://www.mozilla.org/security/advisories/mfsa2018-26/	vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1484753	vendor advisory issue tracking permissions required
http://www.securityfocus.com/bid/105721	third party advisory vdb entry
https://usn.ubuntu.com/3801-1/	third party advisory vendor advisory
http://www.securitytracker.com/id/1041944	third party advisory vdb entry

Frequently Asked Questions

What is the severity of CVE-2018-12403?: CVE-2018-12403 has been scored as a medium severity vulnerability.
How to fix CVE-2018-12403?: To fix CVE-2018-12403, 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-2018-12403 being actively exploited in the wild?: It is possible that CVE-2018-12403 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-12403?: CVE-2018-12403 affects Mozilla Firefox.

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