7.8
Advisory Published
Updated

CVE-2017-5419

First published: Tue Mar 07 2017(Updated: )

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.

Credit: security@mozilla.org

Affected SoftwareAffected VersionHow to fix
Firefox<52
52
Thunderbird<52
52
Firefox<52.0
Thunderbird<52.0

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Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2017-5419?

    CVE-2017-5419 is classified as a denial of service (DoS) vulnerability.

  • How do I fix CVE-2017-5419?

    To remediate CVE-2017-5419, update your Mozilla Firefox or Thunderbird to version 52.0 or later.

  • What affects CVE-2017-5419?

    CVE-2017-5419 affects Mozilla Firefox and Thunderbird versions prior to 52.0.

  • What happens if CVE-2017-5419 is exploited?

    Exploitation of CVE-2017-5419 can lead to the browser or email client becoming non-responsive.

  • Who is the vendor for CVE-2017-5419?

    The vendor for CVE-2017-5419 is Mozilla.

Contact

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