CVE-2023-5171
6.5
MEDIUM
CVSS 3.1
EPSS 0.26%
Description
During Ion compilation, a Garbage Collection could have resulted in a use-after-free condition, allowing an attacker to write two NUL bytes, and cause a potentially exploitable crash. This vulnerability affects Firefox < 118, Firefox ESR < 115.3, and Thunderbird < 115.3.
How to fix CVE-2023-5171
To remediate CVE-2023-5171, upgrade the affected package to a fixed version below.
- Debian/firefox-esr—upgrade to 115.3.0esr-1~deb11u1 or later
- —upgrade to 1:115.3.1-1~deb11u1 or later
Is CVE-2023-5171 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 115.3.0esr-1~deb11u1
- from 0, < 1:115.3.1-1~deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |