CVE-2018-12403
UnknownEPSS 1.87%
Last modified
CVE-2018-12403 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.87% chance of exploitation in the next 30 days.
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.
Metrics
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 63.0 |
| Canonical | Ubuntu Linux | 14.04 |
| Canonical | Ubuntu Linux | 16.04 |
| Canonical | Ubuntu Linux | 18.04 |
| Canonical | Ubuntu Linux | 18.10 |
References
- http://www.securityfocus.com/bid/105721Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041944Third Party Advisory, VDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1484753Issue Tracking, Permissions Required, Vendor Advisory
- https://usn.ubuntu.com/3801-1/Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-26/Vendor Advisory
- http://www.securityfocus.com/bid/105721Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041944Third Party Advisory, VDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1484753Issue Tracking, Permissions Required, Vendor Advisory
- https://usn.ubuntu.com/3801-1/Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-26/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2018-12403?
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.
How severe is CVE-2018-12403?
Severity scoring for CVE-2018-12403 is pending analysis. The EPSS model estimates a 1.87% probability of exploitation in the next 30 days.
How do I fix CVE-2018-12403?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2018-12403?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST