CVE-2018-12399

Reference Links

• http://www.securityfocus.com/bid/105721
• https://bugzilla.mozilla.org/show_bug.cgi?id=1490276
• https://www.mozilla.org/security/advisories/mfsa2018-26/
• http://www.securitytracker.com/id/1041944
• https://usn.ubuntu.com/3801-1/
• https://launchpad.net/bugs/cve/CVE-2018-12399
• https://www.mozilla.org/en-US/security/advisories/mfsa2018-26/
• https://www.mozilla.org/en-US/security/advisories/mfsa2018-26/#CVE-2018-12399
• https://security-tracker.debian.org/tracker/CVE-2018-12399
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12399
• https://nvd.nist.gov/vuln/detail/CVE-2018-12399
• https://ubuntu.com/security/CVE-2018-12399

Parent vulnerabilities

(Appears in the following advisories)

• MFSA2018-26

Peer vulnerabilities

(Found alongside the following vulnerabilities)

• CVE-2018-12391
• CVE-2018-12392
• CVE-2018-12393
• CVE-2018-12395
• CVE-2018-12396
• CVE-2018-12397
• CVE-2018-12398
• CVE-2018-12402
• CVE-2018-12399
• CVE-2018-12400
• CVE-2018-12401
• CVE-2018-12403
• CVE-2018-12388
• CVE-2018-12390

Frequently Asked Questions

• What is CVE-2018-12399?

  CVE-2018-12399 refers to a vulnerability in Firefox < 63 where the API accepts a title argument that can be used to mislead users about which domain is registering a new protocol.

• How does CVE-2018-12399 affect Firefox?

  CVE-2018-12399 affects Firefox versions prior to 63.

• What is the severity of CVE-2018-12399?

  CVE-2018-12399 has a severity rating of 4.3 (medium).

• How do I fix CVE-2018-12399 in Firefox?

  To fix CVE-2018-12399, update Firefox to version 63 or higher.

• Where can I find more information about CVE-2018-12399?

  You can find more information about CVE-2018-12399 on the Mozilla website and the MITRE CVE database.