Vulnerability Description
WebExtension content scripts can be loaded into about: pages in some circumstances, in violation of the permissions granted to extensions. This could allow an extension to interfere with the loading and usage of these pages and use capabilities that were intended to be restricted from extensions. This vulnerability affects Firefox < 64.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 64.0 |
| Canonical | Ubuntu Linux | 14.04 |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/106167Third Party AdvisoryVDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1427585Issue TrackingPermissions RequiredVendor Advisory
- https://usn.ubuntu.com/3844-1/Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-29/Vendor Advisory
- http://www.securityfocus.com/bid/106167Third Party AdvisoryVDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1427585Issue TrackingPermissions RequiredVendor Advisory
- https://usn.ubuntu.com/3844-1/Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-29/Vendor Advisory
FAQ
What is CVE-2018-18495?
CVE-2018-18495 is a vulnerability with a CVSS score of 6.5 (MEDIUM). WebExtension content scripts can be loaded into about: pages in some circumstances, in violation of the permissions granted to extensions. This could allow an extension to interfere with the loading a...
How severe is CVE-2018-18495?
CVE-2018-18495 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-18495?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox, Canonical Ubuntu Linux.