Detections
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Azure Linux 3.0 Security Update: qemu (CVE-2023-3255)

medium Nessus Plugin ID 234598

Synopsis

The remote Azure Linux host is missing one or more security updates.

Description

The version of qemu installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2023-3255 advisory.

 - A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. A wrong exit condition May lead to an infinite loop when inflating an attacker controlled zlib buffer in the `inflate_buffer` function. This could allow a remote authenticated client who is able to send a clipboard to the VNC server to trigger a denial of service. (CVE-2023-3255)

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

Solution

Update the affected packages.

See Also

https://nvd.nist.gov/vuln/detail/CVE-2023-3255

Plugin Details

Severity: Medium

ID: 234598

File Name: azure_linux_CVE-2023-3255.nasl

Version: 1.1

Type: local

Published: 4/18/2025

Updated: 4/18/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2023-3255

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

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

Vulnerability Information

CPE: p-cpe:/a:microsoft:azure_linux:qemu-system-aarch64-core, p-cpe:/a:microsoft:azure_linux:qemu-system-alpha-core, p-cpe:/a:microsoft:azure_linux:qemu-system-x86, p-cpe:/a:microsoft:azure_linux:qemu-device-display-virtio-gpu, x-cpe:/o:microsoft:azure_linux, p-cpe:/a:microsoft:azure_linux:qemu-system-loongarch64, p-cpe:/a:microsoft:azure_linux:qemu-system-microblaze, p-cpe:/a:microsoft:azure_linux:qemu-system-loongarch64-core, p-cpe:/a:microsoft:azure_linux:qemu-device-display-virtio-vga-gl, p-cpe:/a:microsoft:azure_linux:qemu-ui-opengl, p-cpe:/a:microsoft:azure_linux:qemu-system-cris, p-cpe:/a:microsoft:azure_linux:qemu-device-display-virtio-gpu-pci, p-cpe:/a:microsoft:azure_linux:qemu-audio-alsa, p-cpe:/a:microsoft:azure_linux:qemu-device-display-virtio-gpu-gl, p-cpe:/a:microsoft:azure_linux:qemu-block-iscsi, p-cpe:/a:microsoft:azure_linux:qemu-tests, p-cpe:/a:microsoft:azure_linux:qemu-ui-curses, p-cpe:/a:microsoft:azure_linux:qemu-system-arm, p-cpe:/a:microsoft:azure_linux:qemu-block-dmg, p-cpe:/a:microsoft:azure_linux:qemu-block-rbd, p-cpe:/a:microsoft:azure_linux:qemu-audio-oss, p-cpe:/a:microsoft:azure_linux:qemu-ipxe, p-cpe:/a:microsoft:azure_linux:qemu-system-cris-core, p-cpe:/a:microsoft:azure_linux:qemu-system-alpha, p-cpe:/a:microsoft:azure_linux:qemu-system-m68k-core, p-cpe:/a:microsoft:azure_linux:qemu-system-mips, p-cpe:/a:microsoft:azure_linux:qemu-system-x86-core, p-cpe:/a:microsoft:azure_linux:qemu-ui-egl-headless, p-cpe:/a:microsoft:azure_linux:qemu-virtiofsd, p-cpe:/a:microsoft:azure_linux:qemu-block-curl, p-cpe:/a:microsoft:azure_linux:qemu-system-avr, p-cpe:/a:microsoft:azure_linux:qemu-system-arm-core, p-cpe:/a:microsoft:azure_linux:qemu-img, p-cpe:/a:microsoft:azure_linux:qemu-device-display-vhost-user-gpu, p-cpe:/a:microsoft:azure_linux:qemu-guest-agent, p-cpe:/a:microsoft:azure_linux:qemu-system-m68k, p-cpe:/a:microsoft:azure_linux:qemu-kvm-core, p-cpe:/a:microsoft:azure_linux:qemu-common, p-cpe:/a:microsoft:azure_linux:qemu-kvm, p-cpe:/a:microsoft:azure_linux:qemu-system-hppa, p-cpe:/a:microsoft:azure_linux:qemu-user-binfmt, p-cpe:/a:microsoft:azure_linux:qemu-system-hppa-core, p-cpe:/a:microsoft:azure_linux:qemu-device-usb-smartcard, p-cpe:/a:microsoft:azure_linux:qemu-docs, p-cpe:/a:microsoft:azure_linux:qemu-tools, p-cpe:/a:microsoft:azure_linux:qemu-system-microblaze-core, p-cpe:/a:microsoft:azure_linux:qemu-ui-gtk, p-cpe:/a:microsoft:azure_linux:qemu-device-display-virtio-gpu-pci-gl, p-cpe:/a:microsoft:azure_linux:qemu-block-nfs, p-cpe:/a:microsoft:azure_linux:qemu-system-aarch64, p-cpe:/a:microsoft:azure_linux:qemu-pr-helper, p-cpe:/a:microsoft:azure_linux:qemu-system-avr-core, p-cpe:/a:microsoft:azure_linux:qemu-user, p-cpe:/a:microsoft:azure_linux:qemu, p-cpe:/a:microsoft:azure_linux:qemu-device-display-virtio-vga, p-cpe:/a:microsoft:azure_linux:qemu-device-usb-redirect, p-cpe:/a:microsoft:azure_linux:qemu-device-usb-host, p-cpe:/a:microsoft:azure_linux:qemu-device-display-virtio-gpu-ccw

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/AzureLinux/release, Host/AzureLinux/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 4/8/2025

Vulnerability Publication Date: 8/25/2023

Reference Information

CVE: CVE-2023-3255