CVE-2023-28450
7.5
HIGH
CVSS 3.1
EPSS 0.01%
Description
An issue was discovered in Dnsmasq before 2.90. The default maximum EDNS.0 UDP packet size was set to 4096 but should be 1232 because of DNS Flag Day 2020.
How to fix CVE-2023-28450
To remediate CVE-2023-28450, upgrade the affected package to a fixed version below.
- Alpine/dnsmasq—upgrade to 2.86-r3 or later
- Debian/dnsmasq—upgrade to 2.85-1+deb11u1 or later
Is CVE-2023-28450 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 2.86-r3
- from 0, < 2.85-1+deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |