CVE-2017-7803
7.5
HIGH
CVSS 3.1
EPSS 1.1%
Description
When a page's content security policy (CSP) header contains a "sandbox" directive, other directives are ignored. This results in the incorrect enforcement of CSP. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.
How to fix CVE-2017-7803
To remediate CVE-2017-7803, upgrade the affected package to a fixed version below.
- Debian/firefox-esr—upgrade to 52.3.0esr-1 or later
Is CVE-2017-7803 being exploited?
Low — EPSS is 1.1%, 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 | HIGH7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |