CVE-2017-7763
Medium
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.
SeverityMedium
CVSS5.3
Exploit probability—
Product
Mozilla Firefox
PublishedJun 11, 2018
First seenJun 11, 2018
How to fix
Update
- mozilla firefox52.2.0, 54.0 or later
- mozilla thunderbird52.2.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 52.2.0, v < 54.0 | 52.2.0, 54.0 |
| mozilla thunderbird | v < 52.2.0 | 52.2.0 |
| debian debian_linux | 8.0, 9.0 | — |
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