CVE-2017-7807
8.1
HIGH
CVSS 3.1
EPSS 0.78%
Description
A mechanism that uses AppCache to hijack a URL in a domain using fallback by serving the files from a sub-path on the domain. This has been addressed by requiring fallback files be inside the manifest directory. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.
How to fix CVE-2017-7807
To remediate CVE-2017-7807, upgrade the affected package to a fixed version below.
- Debian/firefox-esr—upgrade to 52.3.0esr-1 or later
Is CVE-2017-7807 being exploited?
Low — EPSS is 0.8%, 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 | HIGH8.1 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N |