Ubuntu 20.04 LTS / 22.04 LTS / 23.10 : Open vSwitch vulnerabilities (USN-6690-1)

medium Nessus Plugin ID 191928


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


The remote Ubuntu 20.04 LTS / 22.04 LTS / 23.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6690-1 advisory.

- A flaw was found in Open vSwitch where multiple versions are vulnerable to crafted Geneve packets, which may result in a denial of service and invalid memory accesses. Triggering this issue requires that hardware offloading via the netlink path is enabled. (CVE-2023-3966)

- A flaw was found in Open vSwitch that allows ICMPv6 Neighbor Advertisement packets between virtual machines to bypass OpenFlow rules. This issue may allow a local attacker to create specially crafted packets with a modified or spoofed target IP address field that can redirect ICMPv6 traffic to arbitrary IP addresses. (CVE-2023-5366)

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


Update the affected packages.

See Also


Plugin Details

Severity: Medium

ID: 191928

File Name: ubuntu_USN-6690-1.nasl

Version: 1.0

Type: local

Agent: unix

Published: 3/12/2024

Updated: 3/12/2024

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

Risk Information


Risk Factor: Low

Score: 3.6


Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:C/A:N

CVSS Score Source: CVE-2023-5366


Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, cpe:/o:canonical:ubuntu_linux:23.10, p-cpe:/a:canonical:ubuntu_linux:openvswitch-common, p-cpe:/a:canonical:ubuntu_linux:openvswitch-ipsec, p-cpe:/a:canonical:ubuntu_linux:openvswitch-pki, p-cpe:/a:canonical:ubuntu_linux:openvswitch-source, p-cpe:/a:canonical:ubuntu_linux:openvswitch-switch, p-cpe:/a:canonical:ubuntu_linux:openvswitch-switch-dpdk, p-cpe:/a:canonical:ubuntu_linux:openvswitch-test, p-cpe:/a:canonical:ubuntu_linux:openvswitch-testcontroller, p-cpe:/a:canonical:ubuntu_linux:openvswitch-vtep, p-cpe:/a:canonical:ubuntu_linux:python3-openvswitch

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

Exploit Ease: No known exploits are available

Patch Publication Date: 3/12/2024

Vulnerability Publication Date: 10/6/2023

Reference Information

CVE: CVE-2023-3966, CVE-2023-5366

USN: 6690-1