Vulnerability Description
Limitations on the URIs allowed to WebExtensions by the browser.windows.create API can be bypassed when a pipe in the URL field is used within the extension to load multiple pages as a single argument. This could allow a malicious WebExtension to open privileged about: or file: locations. This vulnerability affects Firefox < 64.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 64.0 |
| Canonical | Ubuntu Linux | 14.04 |
References
- http://www.securityfocus.com/bid/106167Third Party AdvisoryVDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1488180Issue 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=1488180Issue 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-2018-18497?
CVE-2018-18497 is a vulnerability with a CVSS score of 6.5 (MEDIUM). Limitations on the URIs allowed to WebExtensions by the browser.windows.create API can be bypassed when a pipe in the URL field is used within the extension to load multiple pages as a single argument...
How severe is CVE-2018-18497?
CVE-2018-18497 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-2018-18497?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox, Canonical Ubuntu Linux.