CVE Vulnerabilities

CVE-2020-13529

Authentication Bypass by Spoofing

Published: May 10, 2021 | Modified: Nov 21, 2024
CVSS 3.x
6.1
MEDIUM
Source:
NVD
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
CVSS 2.x
2.9 LOW
AV:A/AC:M/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
6.1 MODERATE
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
Ubuntu
LOW
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An exploitable denial-of-service vulnerability exists in Systemd 245. A specially crafted DHCP FORCERENEW packet can cause a server running the DHCP client to be vulnerable to a DHCP ACK spoofing attack. An attacker can forge a pair of FORCERENEW and DCHP ACK packets to reconfigure the server.

Weakness

This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.

Affected Software

NameVendorStart VersionEnd Version
SystemdSystemd_project245 (including)245 (including)
Red Hat Enterprise Linux 8RedHatNetworkManager-1:1.32.10-4.el8*
Red Hat Enterprise Linux 8RedHatNetworkManager-1:1.32.10-4.el8*
SystemdUbuntubionic*
SystemdUbuntudevel*
SystemdUbuntuesm-infra-legacy/trusty*
SystemdUbuntuesm-infra/bionic*
SystemdUbuntuesm-infra/focal*
SystemdUbuntuesm-infra/xenial*
SystemdUbuntufocal*
SystemdUbuntugroovy*
SystemdUbuntuhirsute*
SystemdUbuntuimpish*
SystemdUbuntujammy*
SystemdUbuntukinetic*
SystemdUbuntulunar*
SystemdUbuntumantic*
SystemdUbuntunoble*
SystemdUbuntuoracular*
SystemdUbuntuplucky*
SystemdUbuntuquesting*
SystemdUbuntutrusty*
SystemdUbuntutrusty/esm*
SystemdUbuntuxenial*

References