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ubuntucveUbuntu.comUB:CVE-2023-28450
HistoryMar 15, 2023 - 12:00 a.m.

CVE-2023-28450

2023-03-1500:00:00
ubuntu.com
ubuntu.com
35
dnsmasq
dns flag day
udp packet
maximum size
security issue

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

0.003 Low

EPSS

Percentile

68.1%

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.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchdnsmasq< 2.79-1ubuntu0.7UNKNOWN
ubuntu20.04noarchdnsmasq< 2.80-1.1ubuntu1.7UNKNOWN
ubuntu22.04noarchdnsmasq< 2.86-1.1ubuntu0.3UNKNOWN
ubuntu22.10noarchdnsmasq< 2.86-1.1ubuntu2.1UNKNOWN
ubuntu23.10noarchdnsmasq< 2.90-0ubuntu0.23.10.1UNKNOWN
ubuntu24.04noarchdnsmasq< 2.90-1UNKNOWN
ubuntu14.04noarchdnsmasq< 2.68-1ubuntu0.2+esm2UNKNOWN
ubuntu16.04noarchdnsmasq< 2.79-1ubuntu0.16.04.1+esm2UNKNOWN

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

0.003 Low

EPSS

Percentile

68.1%