Vulnerability Description
WebExtensions could use popups and panels in the extension UI to load an "about:" privileged URL, violating security checks that disallow this behavior. This vulnerability affects Firefox < 56.
CVSS Score
5.3
MEDIUM
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | <= 55.0.3 |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/101057Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039465Third Party AdvisoryVDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1380597ExploitIssue Tracking
- https://www.mozilla.org/security/advisories/mfsa2017-21/Vendor Advisory
- http://www.securityfocus.com/bid/101057Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039465Third Party AdvisoryVDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1380597ExploitIssue Tracking
- https://www.mozilla.org/security/advisories/mfsa2017-21/Vendor Advisory
FAQ
What is CVE-2017-7816?
CVE-2017-7816 is a vulnerability with a CVSS score of 5.3 (MEDIUM). WebExtensions could use popups and panels in the extension UI to load an "about:" privileged URL, violating security checks that disallow this behavior. This vulnerability affects Firefox < 56.
How severe is CVE-2017-7816?
CVE-2017-7816 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-7816?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox.