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NewStart CGSL MAIN 7.02 : qemu Multiple Vulnerabilities (NS-SA-2025-0072)

medium Nessus Plugin ID 237987

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. 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)

 - A heap buffer overflow was found in the virtio-snd device in QEMU. When reading input audio in the virtio- snd input callback, virtio_snd_pcm_in_cb, the function did not check whether the iov can fit the data buffer. This issue can trigger an out-of-bounds write if the size of the virtio queue element is equal to virtio_snd_pcm_status, which makes the available space for audio data zero. (CVE-2024-7730)

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-2025-0072

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: 237987

File Name: newstart_cgsl_NS-SA-2025-0072_qemu.nasl

Version: 1.2

Type: local

Published: 6/9/2025

Updated: 6/18/2025

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/cpu, Host/ZTE-CGSL/release, Host/ZTE-CGSL/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 5/28/2025

Vulnerability Publication Date: 1/2/2024

Reference Information

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

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