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Vulnerability · Published Mar 15, 2023 · Assigned by mitre

CVE-2023-28450

High 7.5

In plain English

A high-severity security flaw in the dnsmasq package (AlmaLinux). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.8% (higher than 79% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)1.8%top 21.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8dnsmasq2.79-31.el8ALSA-2023:7046
AlmaLinux:9dnsmasq2.85-14.el9ALSA-2023:6524
AlmaLinux:8dnsmasq-utils2.79-31.el8ALSA-2023:7046
AlmaLinux:9dnsmasq-utils2.85-14.el9ALSA-2023:6524
Alpine:v3.20dnsmasq2.89-r3ALPINE-CVE-2023-28450
Alpine:v3.21dnsmasq2.89-r3ALPINE-CVE-2023-28450
Alpine:v3.22dnsmasq2.89-r3ALPINE-CVE-2023-28450
Alpine:v3.23dnsmasq2.89-r3ALPINE-CVE-2023-28450
Alpine:v3.24dnsmasq2.89-r3ALPINE-CVE-2023-28450
Debian:12dnsmasq2.90-4~deb12u1DEBIAN-CVE-2023-28450
Debian:13dnsmasq2.90-1DEBIAN-CVE-2023-28450
Debian:14dnsmasq2.90-1DEBIAN-CVE-2023-28450
Ubuntu:22.04:LTSdnsmasq2.86-1.1ubuntu0.3UBUNTU-CVE-2023-28450
Ubuntu:22.04:LTSdnsmasq2.86-1.1ubuntu0.3USN-6034-1
Ubuntu:22.04:LTSdnsmasq2.90-0ubuntu0.22.04.1USN-6657-1

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

References