Rapid7 Vulnerability & Exploit Database

Red Hat: CVE-2023-6683: QEMU: VNC: NULL pointer dereference in qemu_clipboard_request() (Multiple Advisories)

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Red Hat: CVE-2023-6683: QEMU: VNC: NULL pointer dereference in qemu_clipboard_request() (Multiple Advisories)

Severity
7
CVSS
(AV:N/AC:L/Au:S/C:N/I:N/A:C)
Published
01/12/2024
Created
05/01/2024
Added
05/01/2024
Modified
05/01/2024

Description

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.

Solution(s)

  • redhat-upgrade-qemu-guest-agent
  • redhat-upgrade-qemu-guest-agent-debuginfo
  • redhat-upgrade-qemu-img
  • redhat-upgrade-qemu-img-debuginfo
  • redhat-upgrade-qemu-kvm
  • redhat-upgrade-qemu-kvm-audio-dbus-debuginfo
  • redhat-upgrade-qemu-kvm-audio-pa
  • redhat-upgrade-qemu-kvm-audio-pa-debuginfo
  • redhat-upgrade-qemu-kvm-block-blkio
  • redhat-upgrade-qemu-kvm-block-blkio-debuginfo
  • redhat-upgrade-qemu-kvm-block-curl
  • redhat-upgrade-qemu-kvm-block-curl-debuginfo
  • redhat-upgrade-qemu-kvm-block-rbd
  • redhat-upgrade-qemu-kvm-block-rbd-debuginfo
  • redhat-upgrade-qemu-kvm-common
  • redhat-upgrade-qemu-kvm-common-debuginfo
  • redhat-upgrade-qemu-kvm-core
  • redhat-upgrade-qemu-kvm-core-debuginfo
  • redhat-upgrade-qemu-kvm-debuginfo
  • redhat-upgrade-qemu-kvm-debugsource
  • redhat-upgrade-qemu-kvm-device-display-virtio-gpu
  • redhat-upgrade-qemu-kvm-device-display-virtio-gpu-ccw
  • redhat-upgrade-qemu-kvm-device-display-virtio-gpu-ccw-debuginfo
  • redhat-upgrade-qemu-kvm-device-display-virtio-gpu-debuginfo
  • redhat-upgrade-qemu-kvm-device-display-virtio-gpu-pci
  • redhat-upgrade-qemu-kvm-device-display-virtio-gpu-pci-debuginfo
  • redhat-upgrade-qemu-kvm-device-display-virtio-vga
  • redhat-upgrade-qemu-kvm-device-display-virtio-vga-debuginfo
  • redhat-upgrade-qemu-kvm-device-usb-host
  • redhat-upgrade-qemu-kvm-device-usb-host-debuginfo
  • redhat-upgrade-qemu-kvm-device-usb-redirect
  • redhat-upgrade-qemu-kvm-device-usb-redirect-debuginfo
  • redhat-upgrade-qemu-kvm-docs
  • redhat-upgrade-qemu-kvm-tests-debuginfo
  • redhat-upgrade-qemu-kvm-tools
  • redhat-upgrade-qemu-kvm-tools-debuginfo
  • redhat-upgrade-qemu-kvm-ui-dbus-debuginfo
  • redhat-upgrade-qemu-kvm-ui-egl-headless
  • redhat-upgrade-qemu-kvm-ui-egl-headless-debuginfo
  • redhat-upgrade-qemu-kvm-ui-opengl
  • redhat-upgrade-qemu-kvm-ui-opengl-debuginfo
  • redhat-upgrade-qemu-pr-helper
  • redhat-upgrade-qemu-pr-helper-debuginfo

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