VDB
CVE-2017-7820
CVE-2017-7820
PUBLISHED
The "instanceof" operator can bypass the Xray wrapper mechanism. When called on web content from the browser itself or an extension the web content can provide its own result for that operator, possibly tricking the browser or extension into mishandling the element. This vulnerability affects Firefox < 56.
EPSS 0.81% · 74.6th percentile
Risk Scores
EPSS Score
0.81%
74.6th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:18.04:LTS | firefox | 0 |
| Ubuntu:16.04:LTS | firefox | 42.0+build2-0ubuntu1, 44.0+build3-0ubuntu2, 44.0.1+build1-0ubuntu1 |
| Ubuntu:14.04:LTS | firefox | *, 45.0.2+build1-0ubuntu0.14.04.1, 46.0+build5-0ubuntu0.14.04.2 |
Exploit Intelligence
Timeline
- Oct 2, 2017 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 24, 2021 EPSS Score
- Oct 26, 2021 EPSS Score
- Dec 27, 2021 EPSS Score
- Feb 28, 2022 EPSS Score
- May 2, 2022 EPSS Score
- Jul 3, 2022 EPSS Score
- Sep 5, 2022 EPSS Score
- Nov 6, 2022 EPSS Score
- Jan 8, 2023 EPSS Score
References
- https://ubuntu.com/security/CVE-2017-7820 third-party-advisory
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-21/ third-party-advisory
- https://ubuntu.com/security/notices/USN-3435-1 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2017-7820 third-party-advisory