Vulnerability Description
Default fonts on OS X display some Tibetan characters as whitespace. When used in the addressbar as part of an 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 < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 52.2.0 |
| Mozilla | Thunderbird | < 52.2.0 |
| Apple | Mac Os X | - |
| Debian | Debian Linux | 8.0 |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/99057Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1038689Third Party AdvisoryVDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1360309Issue TrackingVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-15/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-16/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-17/Vendor Advisory
- http://www.securityfocus.com/bid/99057Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1038689Third Party AdvisoryVDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1360309Issue TrackingVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-15/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-16/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-17/Vendor Advisory
FAQ
What is CVE-2017-7763?
CVE-2017-7763 is a vulnerability with a CVSS score of 5.3 (MEDIUM). Default fonts on OS X display some Tibetan characters as whitespace. When used in the addressbar as part of an IDN this can be used for domain name spoofing attacks. Note: This attack only affects OS ...
How severe is CVE-2017-7763?
CVE-2017-7763 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-2017-7763?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox, Mozilla Thunderbird, Apple Mac Os X, Debian Debian Linux.