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CBL Mariner 2.0 Security Update: qemu (CVE-2023-2861)

high Nessus Plugin ID 234303

Synopsis

The remote CBL Mariner host is missing one or more security updates.

Description

The version of qemu installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2023-2861 advisory.

 - A flaw was found in the 9p passthrough filesystem (9pfs) implementation in QEMU. The 9pfs server did not prohibit opening special files on the host side, potentially allowing a malicious client to escape from the exported 9p tree by creating and opening a device file in the shared folder. (CVE-2023-2861)

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-2023-2861

Plugin Details

Severity: High

ID: 234303

File Name: mariner_CVE-2023-2861.nasl

Version: 1.1

Type: local

Published: 4/13/2025

Updated: 4/13/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 6.2

Temporal Score: 4.6

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

CVSS Score Source: CVE-2023-2861

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

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

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

Vulnerability Information

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

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

Exploit Ease: No known exploits are available

Patch Publication Date: 4/8/2025

Vulnerability Publication Date: 7/17/2023

Reference Information

CVE: CVE-2023-2861

IAVB: 2023-B-0058-S