CVE-2019-18224
libidn2 - security update
9.8
CRITICAL
CVSS 3.1
EPSS 2.2%
Description
idn2_to_ascii_4i in lib/lookup.c in GNU libidn2 before 2.1.1 has a heap-based buffer overflow via a long domain string.
How to fix CVE-2019-18224
To remediate CVE-2019-18224, upgrade the affected package to a fixed version below.
- Alpine/libidn2—upgrade to 2.1.1-r0 or later
- Debian/libidn2—upgrade to 2.2.0-1 or later
- —upgrade to 2.0.5-1+deb10u1 or later
Is CVE-2019-18224 being exploited?
Low — EPSS is 2.2%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 2.1.1-r0
- from 0, < 2.2.0-1
- from 0, < 2.0.5-1+deb10u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |