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Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS : OpenStack Neutron vulnerabilities (USN-6067-1)

critical Nessus Plugin ID 175565

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6067-1 advisory.

 David Sinquin discovered that OpenStack Neutron incorrectly handled the default Open vSwitch firewall rules. An attacker could possibly use this issue to impersonate the IPv6 addresses of other systems on the network. This issue only affected Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2021-20267)

 Jake Yip and Justin Mammarella discovered that OpenStack Neutron incorrectly handled the linuxbridge driver when ebtables-nft is being used. An attacker could possibly use this issue to impersonate the hardware addresss of other systems on the network. This issue only affected Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2021-38598)

 Pavel Toporkov discovered that OpenStack Neutron incorrectly handled extra_dhcp_opts values. An attacker could possibly use this issue to reconfigure dnsmasq. This issue only affected Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2021-40085)

 Slawek Kaplonski discovered that OpenStack Neutron incorrectly handled the routes middleware. An attacker could possibly use this issue to cause the API worker to consume memory, leading to a denial of service.
 This issue only affected Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2021-40797)

 It was discovered that OpenStack Neutron incorrectly handled certain queries. A remote authenticated user could possibly use this issue to cause resource consumption, leading to a denial of service.
 (CVE-2022-3277)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-6067-1

Plugin Details

Severity: Critical

ID: 175565

File Name: ubuntu_USN-6067-1.nasl

Version: 1.2

Type: local

Agent: unix

Published: 5/13/2023

Updated: 8/27/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.5

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:P

CVSS Score Source: CVE-2021-38598

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 8.2

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:neutron-ovn-metadata-agent, p-cpe:/a:canonical:ubuntu_linux:neutron-plugin-linuxbridge-agent, p-cpe:/a:canonical:ubuntu_linux:neutron-plugin-sriov-agent, p-cpe:/a:canonical:ubuntu_linux:neutron-sriov-agent, p-cpe:/a:canonical:ubuntu_linux:python3-neutron, p-cpe:/a:canonical:ubuntu_linux:neutron-linuxbridge-agent, p-cpe:/a:canonical:ubuntu_linux:neutron-metering-agent, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:python-neutron, p-cpe:/a:canonical:ubuntu_linux:neutron-dhcp-agent, p-cpe:/a:canonical:ubuntu_linux:neutron-l3-agent, p-cpe:/a:canonical:ubuntu_linux:neutron-common, p-cpe:/a:canonical:ubuntu_linux:neutron-plugin-ml2, p-cpe:/a:canonical:ubuntu_linux:neutron-macvtap-agent, p-cpe:/a:canonical:ubuntu_linux:neutron-openvswitch-agent, p-cpe:/a:canonical:ubuntu_linux:neutron-metadata-agent, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:neutron-plugin-openvswitch-agent, p-cpe:/a:canonical:ubuntu_linux:neutron-server

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/10/2023

Vulnerability Publication Date: 5/28/2021

Reference Information

CVE: CVE-2021-20267, CVE-2021-38598, CVE-2021-40085, CVE-2021-40797, CVE-2022-3277

USN: 6067-1