CVE-2017-7816: Input Validation

Reference Links

• https://bugzilla.mozilla.org/show_bug.cgi?id=1380597
• https://www.mozilla.org/security/advisories/mfsa2017-21/
• http://www.securityfocus.com/bid/101057
• http://www.securitytracker.com/id/1039465
• https://launchpad.net/bugs/cve/CVE-2017-7816
• https://www.mozilla.org/en-US/security/advisories/mfsa2017-21/
• https://www.mozilla.org/en-US/security/advisories/mfsa2017-21/#CVE-2017-7822
• https://www.mozilla.org/en-US/security/advisories/mfsa2017-21/#CVE-2017-7816
• https://security-tracker.debian.org/tracker/CVE-2017-7816
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7816
• https://nvd.nist.gov/vuln/detail/CVE-2017-7816
• https://ubuntu.com/security/CVE-2017-7816

Parent vulnerabilities

(Appears in the following advisories)

• MFSA2017-21

Peer vulnerabilities

(Found alongside the following vulnerabilities)

• CVE-2017-7793
• CVE-2017-7817
• CVE-2017-7818
• CVE-2017-7819
• CVE-2017-7824
• CVE-2017-7805
• CVE-2017-7812
• CVE-2017-7814
• CVE-2017-7813
• CVE-2017-7825
• CVE-2017-7815
• CVE-2017-7816
• CVE-2017-7821
• CVE-2017-7823
• CVE-2017-7822
• CVE-2017-7820
• CVE-2017-7811
• CVE-2017-7810

Frequently Asked Questions

• What is CVE-2017-7816?

  CVE-2017-7816 is a vulnerability in Firefox < 56 where WebExtensions could use popups and panels in the extension UI to load an "about:" privileged URL, violating security checks.

• How does CVE-2017-7816 affect Firefox?

  CVE-2017-7816 affects Firefox versions earlier than 56.

• What is the severity of CVE-2017-7816?

  The severity of CVE-2017-7816 is medium with a CVSS score of 5.3.

• How can I fix CVE-2017-7816 in Firefox?

  To fix CVE-2017-7816, users should update Firefox to version 56 or later.

• Where can I find more information about CVE-2017-7816?

  More information about CVE-2017-7816 can be found on the Mozilla Bugzilla, Mozilla Security Advisories, and SecurityFocus websites.