CVE-2017-5439
9.8
CRITICAL
CVSS 3.1
EPSS 1.9%
Description
A use-after-free vulnerability during XSLT processing due to poor handling of template parameters. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.
How to fix CVE-2017-5439
To remediate CVE-2017-5439, upgrade the affected package to a fixed version below.
- Debian/firefox-esr—upgrade to 45.9.0esr-1 or later
Is CVE-2017-5439 being exploited?
Low — EPSS is 1.9%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 45.9.0esr-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |