CVE-2017-5447
9.1
CRITICAL
CVSS 3.1
EPSS 17.5%
Description
An out-of-bounds read during the processing of glyph widths during text layout. This results in a potentially exploitable crash and could allow an attacker to read otherwise inaccessible memory. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.
How to fix CVE-2017-5447
To remediate CVE-2017-5447, upgrade the affected package to a fixed version below.
- Debian/firefox-esr—upgrade to 45.9.0esr-1 or later
Is CVE-2017-5447 being exploited?
Moderate — EPSS is 17.5%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (1)
- from 0, < 45.9.0esr-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.1 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |