CVE-2017-7791
5.3
MEDIUM
CVSS 3.1
EPSS 1.4%
Description
On pages containing an iframe, the "data:" protocol can be used to create a modal alert that will render over arbitrary domains following page navigation, spoofing of the origin of the modal alert from the iframe content. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.
How to fix CVE-2017-7791
To remediate CVE-2017-7791, upgrade the affected package to a fixed version below.
- Debian/firefox-esr—upgrade to 52.3.0esr-1 or later
Is CVE-2017-7791 being exploited?
Low — EPSS is 1.4%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 52.3.0esr-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |