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NewStart CGSL MAIN 7.02 : qemu Multiple Vulnerabilities (NS-SA-2025-0153)

medium Nessus Plugin ID 242719

Synopsis

The remote NewStart CGSL host is affected by multiple vulnerabilities.

Description

The remote NewStart CGSL host, running version MAIN 7.02, has qemu packages installed that are affected by multiple vulnerabilities:

 - A stack based buffer overflow was found in the virtio-net device of QEMU. This issue occurs when flushing TX in the virtio_net_flush_tx function if guest features VIRTIO_NET_F_HASH_REPORT, VIRTIO_F_VERSION_1 and VIRTIO_NET_F_MRG_RXBUF are enabled. This could allow a malicious user to overwrite local variables allocated on the stack. Specifically, the `out_sg` variable could be used to read a part of process memory and send it to the wire, causing an information leak. (CVE-2023-6693)

 - 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)

 - A flaw was found in QEMU. The async nature of hot-unplug enables a race scenario where the net device backend is cleared before the virtio-net pci frontend has been unplugged. A malicious guest could use this time window to trigger an assertion and cause a denial of service. (CVE-2023-3301)

 - A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. The qemu_clipboard_request() function can be reached before vnc_server_cut_text_caps() was called and had the chance to initialize the clipboard peer, leading to a NULL pointer dereference. This could allow a malicious authenticated VNC client to crash QEMU and trigger a denial of service. (CVE-2023-6683)

 - A double free vulnerability was found in QEMU virtio devices (virtio-gpu, virtio-serial-bus, virtio- crypto), where the mem_reentrancy_guard flag insufficiently protects against DMA reentrancy issues. This issue could allow a malicious privileged guest user to crash the QEMU process on the host, resulting in a denial of service or allow arbitrary code execution within the context of the QEMU process on the host.
 (CVE-2024-3446)

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

Solution

Upgrade the vulnerable CGSL qemu packages. Note that updated packages may not be available yet. Please contact ZTE for more information.

See Also

https://security.gd-linux.com/notice/NS-SA-2025-0153

https://security.gd-linux.com/info/CVE-2023-3255

https://security.gd-linux.com/info/CVE-2023-3301

https://security.gd-linux.com/info/CVE-2023-6683

https://security.gd-linux.com/info/CVE-2023-6693

https://security.gd-linux.com/info/CVE-2024-3446

https://security.gd-linux.com/info/CVE-2024-7730

Plugin Details

Severity: Medium

ID: 242719

File Name: newstart_cgsl_NS-SA-2025-0153_qemu.nasl

Version: 1.1

Type: local

Published: 7/25/2025

Updated: 7/25/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.5

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

CVSS Score Source: CVE-2023-6693

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

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

Vulnerability Information

CPE: p-cpe:/a:zte:cgsl_main:qemu-audio-oss, p-cpe:/a:zte:cgsl_main:qemu-device-usb-smartcard, p-cpe:/a:zte:cgsl_main:qemu-pr-helper, p-cpe:/a:zte:cgsl_main:qemu-system-x86_64-core, p-cpe:/a:zte:cgsl_main:qemu-char-baum, p-cpe:/a:zte:cgsl_main:qemu-guest-agent, p-cpe:/a:zte:cgsl_main:qemu-audio-pa, p-cpe:/a:zte:cgsl_main:qemu-kvm-core, p-cpe:/a:zte:cgsl_main:qemu-ui-spice-core, p-cpe:/a:zte:cgsl_main:qemu-device-usb-redirect, p-cpe:/a:zte:cgsl_main:qemu-block-dmg, p-cpe:/a:zte:cgsl_main:qemu-device-display-qxl, p-cpe:/a:zte:cgsl_main:qemu-block-curl, p-cpe:/a:zte:cgsl_main:qemu-device-display-virtio-vga-gl, p-cpe:/a:zte:cgsl_main:qemu-block-ssh, p-cpe:/a:zte:cgsl_main:qemu-img, p-cpe:/a:zte:cgsl_main:qemu-tools, p-cpe:/a:zte:cgsl_main:qemu-device-usb-host, p-cpe:/a:zte:cgsl_main:qemu-audio-spice, p-cpe:/a:zte:cgsl_main:qemu-ui-curses, p-cpe:/a:zte:cgsl_main:qemu, p-cpe:/a:zte:cgsl_main:qemu-block-iscsi, p-cpe:/a:zte:cgsl_main:qemu-docs, p-cpe:/a:zte:cgsl_main:qemu-device-display-virtio-gpu, p-cpe:/a:zte:cgsl_main:qemu-audio-alsa, p-cpe:/a:zte:cgsl_main:qemu-kvm, p-cpe:/a:zte:cgsl_main:qemu-ui-gtk, p-cpe:/a:zte:cgsl_main:qemu-block-rbd, p-cpe:/a:zte:cgsl_main:qemu-device-display-virtio-gpu-pci, p-cpe:/a:zte:cgsl_main:qemu-ui-egl-headless, p-cpe:/a:zte:cgsl_main:qemu-ui-opengl, p-cpe:/a:zte:cgsl_main:qemu-block-gluster, p-cpe:/a:zte:cgsl_main:qemu-ui-spice-app, p-cpe:/a:zte:cgsl_main:qemu-char-spice, p-cpe:/a:zte:cgsl_main:qemu-device-display-virtio-vga, cpe:/o:zte:cgsl_main:7, p-cpe:/a:zte:cgsl_main:qemu-system-x86_64, p-cpe:/a:zte:cgsl_main:qemu-common

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/25/2025

Vulnerability Publication Date: 8/3/2023

Reference Information

CVE: CVE-2023-3255, CVE-2023-3301, CVE-2023-6683, CVE-2023-6693, CVE-2024-3446, CVE-2024-7730

IAVB: 2023-B-0058-S, 2024-B-0022-S, 2024-B-0070-S, 2024-B-0171