Vulnerability Description
Low descenders on some Tibetan characters in several fonts on OS X are clipped when rendered in the addressbar. When used as part of an Internationalized Domain Name (IDN) this can be used for domain name spoofing attacks. Note: This attack only affects OS X operating systems. Other operating systems are unaffected. This vulnerability affects Firefox < 58.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | <= 57.0.4 |
| Apple | Mac Os X | All versions |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/102786Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1040270Third Party AdvisoryVDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1402368Issue TrackingPermissions Required
- https://www.mozilla.org/security/advisories/mfsa2018-02/Vendor Advisory
- http://www.securityfocus.com/bid/102786Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1040270Third Party AdvisoryVDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1402368Issue TrackingPermissions Required
- https://www.mozilla.org/security/advisories/mfsa2018-02/Vendor Advisory
FAQ
What is CVE-2018-5121?
CVE-2018-5121 is a vulnerability with a CVSS score of 5.3 (MEDIUM). Low descenders on some Tibetan characters in several fonts on OS X are clipped when rendered in the addressbar. When used as part of an Internationalized Domain Name (IDN) this can be used for domain ...
How severe is CVE-2018-5121?
CVE-2018-5121 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-2018-5121?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox, Apple Mac Os X.