Vulnerability Description
JavaScript can be injected into an exported bookmarks file by placing JavaScript code into user-supplied tags in saved bookmarks. If the resulting exported HTML file is later opened in a browser this JavaScript will be executed. This could be used in social engineering and self-cross-site-scripting (self-XSS) attacks if users were convinced to add malicious tags to bookmarks, export them, and then open the resulting file. 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=1366420Issue 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=1366420Issue TrackingPermissions Required
- https://www.mozilla.org/security/advisories/mfsa2017-24/Vendor Advisory
FAQ
What is CVE-2017-7840?
CVE-2017-7840 is a vulnerability with a CVSS score of 6.1 (MEDIUM). JavaScript can be injected into an exported bookmarks file by placing JavaScript code into user-supplied tags in saved bookmarks. If the resulting exported HTML file is later opened in a browser this ...
How severe is CVE-2017-7840?
CVE-2017-7840 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-2017-7840?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox.