Vulnerability Description
A "data:" URL loaded in a new tab did not inherit the Content Security Policy (CSP) of the original page, allowing for bypasses of the policy including the execution of JavaScript. In prior versions when "data:" documents also inherited the context of the original page this would allow for potential cross-site scripting (XSS) attacks. This vulnerability affects Firefox < 57.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | <= 56.0.2 |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/101832Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039803Third Party AdvisoryVDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1358009Issue TrackingPermissions Required
- https://www.mozilla.org/security/advisories/mfsa2017-24/Vendor Advisory
- http://www.securityfocus.com/bid/101832Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039803Third Party AdvisoryVDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1358009Issue TrackingPermissions Required
- https://www.mozilla.org/security/advisories/mfsa2017-24/Vendor Advisory
FAQ
What is CVE-2017-7834?
CVE-2017-7834 is a vulnerability with a CVSS score of 6.1 (MEDIUM). A "data:" URL loaded in a new tab did not inherit the Content Security Policy (CSP) of the original page, allowing for bypasses of the policy including the execution of JavaScript. In prior versions w...
How severe is CVE-2017-7834?
CVE-2017-7834 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-7834?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox.