VDB
CVE-2017-7764
CVE-2017-7764
PUBLISHED
Characters from the "Canadian Syllabics" unicode block can be mixed with characters from other unicode blocks in the addressbar instead of being rendered as their raw "punycode" form, allowing for domain name spoofing attacks through character confusion. The current Unicode standard allows characters from "Aspirational Use Scripts" such as Canadian Syllabics to be mixed with Latin characters in the "moderately restrictive" IDN profile. We have changed Firefox behavior to match the upcoming Unicode version 10.0 which removes this category and treats them as "Limited Use Scripts.". This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.
EPSS 1.04% · 77.8th percentile
Risk Scores
EPSS Score
1.04%
77.8th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:16.04:LTS | firefox | *, *, * |
| Ubuntu:14.04:LTS | thunderbird | 1:45.7.0+build1-0ubuntu0.14.04.1, 1:45.8.0+build1-0ubuntu0.14.04.1, 1:52.1.1+build1-0ubuntu0.14.04.1 |
| Ubuntu:16.04:LTS | thunderbird | 0, 1:38.3.0+build1-0ubuntu2, 1:38.6.0+build1-0ubuntu1 |
| Ubuntu:14.04:LTS | firefox | 49.0.2+build2-0ubuntu0.14.04.1, 50.0+build2-0ubuntu0.14.04.2, 50.0.2+build1-0ubuntu0.14.04.1 |
Exploit Intelligence
Timeline
- Jun 14, 2017 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 24, 2021 EPSS Score
- Dec 27, 2021 EPSS Score
- Feb 4, 2022 EPSS Score
- Feb 28, 2022 EPSS Score
- May 2, 2022 EPSS Score
- Jul 3, 2022 EPSS Score
- Sep 5, 2022 EPSS Score
- Jan 8, 2023 EPSS Score
- Mar 7, 2023 EPSS Score
References
- https://ubuntu.com/security/CVE-2017-7764 third-party-advisory
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-15/ third-party-advisory
- https://ubuntu.com/security/notices/USN-3315-1 vendor-advisory
- https://ubuntu.com/security/notices/USN-3321-1 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2017-7764 third-party-advisory