Oracle Linux 9 : qemu-kvm (ELSA-2023-5094)

high Nessus Plugin ID 181365


The remote Oracle Linux host is missing a security update.


The remote Oracle Linux 9 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2023-5094 advisory.

- A flaw was found in the QEMU built-in VNC server. When a client connects to the VNC server, QEMU checks whether the current number of connections crosses a certain threshold and if so, cleans up the previous connection. If the previous connection happens to be in the handshake phase and fails, QEMU cleans up the connection again, resulting in a NULL pointer dereference issue. This could allow a remote unauthenticated client to cause a denial of service. (CVE-2023-3354)

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


Update the affected packages.

See Also

Plugin Details

Severity: High

ID: 181365

File Name: oraclelinux_ELSA-2023-5094.nasl

Version: 1.1

Type: local

Agent: unix

Published: 9/13/2023

Updated: 9/29/2023

Supported Sensors: Frictionless Assessment Agent, Nessus Agent

Risk Information


Risk Factor: Medium

Score: 4.4


Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2023-3354


Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: cpe:/a:oracle:linux:9::appstream, cpe:/o:oracle:linux:9, p-cpe:/a:oracle:linux:qemu-guest-agent, p-cpe:/a:oracle:linux:qemu-img, p-cpe:/a:oracle:linux:qemu-kvm, p-cpe:/a:oracle:linux:qemu-kvm-audio-pa, p-cpe:/a:oracle:linux:qemu-kvm-block-curl, p-cpe:/a:oracle:linux:qemu-kvm-block-rbd, p-cpe:/a:oracle:linux:qemu-kvm-common, p-cpe:/a:oracle:linux:qemu-kvm-core, p-cpe:/a:oracle:linux:qemu-kvm-device-display-virtio-gpu, p-cpe:/a:oracle:linux:qemu-kvm-device-display-virtio-gpu-pci, p-cpe:/a:oracle:linux:qemu-kvm-device-display-virtio-vga, p-cpe:/a:oracle:linux:qemu-kvm-device-usb-host, p-cpe:/a:oracle:linux:qemu-kvm-device-usb-redirect, p-cpe:/a:oracle:linux:qemu-kvm-docs, p-cpe:/a:oracle:linux:qemu-kvm-tools, p-cpe:/a:oracle:linux:qemu-kvm-ui-egl-headless, p-cpe:/a:oracle:linux:qemu-kvm-ui-opengl, p-cpe:/a:oracle:linux:qemu-pr-helper

Required KB Items: Host/OracleLinux, Host/RedHat/release, Host/RedHat/rpm-list, Host/local_checks_enabled

Exploit Ease: No known exploits are available

Patch Publication Date: 9/13/2023

Vulnerability Publication Date: 7/11/2023

Reference Information

CVE: CVE-2023-3354

IAVB: 2023-B-0073