Vulnerability Description
WebExtensions may use "view-source:" URLs to view local "file:" URL content, as well as content stored in "about:cache", bypassing restrictions that only allow WebExtensions to view specific content. This vulnerability affects Firefox < 59.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 59.0 |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/103386Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1040514Third Party AdvisoryVDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1429379Permissions Required
- https://usn.ubuntu.com/3596-1/Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-06/Vendor Advisory
- http://www.securityfocus.com/bid/103386Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1040514Third Party AdvisoryVDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1429379Permissions Required
- https://usn.ubuntu.com/3596-1/Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-06/Vendor Advisory
FAQ
What is CVE-2018-5134?
CVE-2018-5134 is a vulnerability with a CVSS score of 7.5 (HIGH). WebExtensions may use "view-source:" URLs to view local "file:" URL content, as well as content stored in "about:cache", bypassing restrictions that only allow WebExtensions to view specific content. ...
How severe is CVE-2018-5134?
CVE-2018-5134 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-5134?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox.