Vulnerability Description
Punycode format text will be displayed for entire qualified international domain names in some instances when a sub-domain triggers the punycode display instead of the primary domain being displayed in native script and the sub-domain only displaying as punycode. This could be used for limited spoofing attacks due to user confusion. 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=1399540Issue 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=1399540Issue TrackingPermissions Required
- https://www.mozilla.org/security/advisories/mfsa2017-24/Vendor Advisory
FAQ
What is CVE-2017-7838?
CVE-2017-7838 is a vulnerability with a CVSS score of 5.3 (MEDIUM). Punycode format text will be displayed for entire qualified international domain names in some instances when a sub-domain triggers the punycode display instead of the primary domain being displayed i...
How severe is CVE-2017-7838?
CVE-2017-7838 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-7838?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox.