CVE-2017-5419

Name: CVE-2017-5419
Creator: NVD / NIST
Published: 2018-06-11T21:29:05.093+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.37%

Last modified Jun 17, 2026

CVE-2017-5419 is a vulnerability of currently unknown severity. If a malicious site repeatedly triggers a modal authentication prompt, eventually the browser UI will become non-responsive, requiring shutdown through the operating system. This is a denial of service (DOS) attack. EPSS estimates a 2.37% chance of exploitation in the next 30 days.

Description

If a malicious site repeatedly triggers a modal authentication prompt, eventually the browser UI will become non-responsive, requiring shutdown through the operating system. This is a denial of service (DOS) attack. This vulnerability affects Firefox < 52 and Thunderbird < 52.

Metrics

EPSS Probability

2.37%

81.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 52.0
Mozilla	Thunderbird	< 52.0

References

http://www.securityfocus.com/bid/96692Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1037966Third Party Advisory, VDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1312243Exploit, Issue Tracking, Patch
https://www.mozilla.org/security/advisories/mfsa2017-05/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-09/Vendor Advisory
http://www.securityfocus.com/bid/96692Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1037966Third Party Advisory, VDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1312243Exploit, Issue Tracking, Patch
https://www.mozilla.org/security/advisories/mfsa2017-05/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-09/Vendor Advisory

Timeline

Published: Jun 11, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-5419?

How severe is CVE-2017-5419?

Severity scoring for CVE-2017-5419 is pending analysis. The EPSS model estimates a 2.37% probability of exploitation in the next 30 days.

How do I fix CVE-2017-5419?

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.

Are you affected by CVE-2017-5419?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST