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Untriaged
Permalink CVE-2023-3354
7.5 HIGH
  • CVSS version: 3.1
  • Attack vector (AV): NETWORK
  • Attack complexity (AC): LOW
  • Privileges required (PR): NONE
  • User interaction (UI): NONE
  • Scope (S): UNCHANGED
  • Confidentiality impact (C): NONE
  • Integrity impact (I): NONE
  • Availability impact (A): HIGH
created 1 year, 2 months ago
Improper i/o watch removal in tls handshake can lead to remote unauthenticated denial of service

A flaw was found in the QEMU built-in VNC server. When a client connects to the VNC server, QEMU checks whether the current number of connections crosses a certain threshold and if so, cleans up the previous connection. If the previous connection happens to be in the handshake phase and fails, QEMU cleans up the connection again, resulting in a NULL pointer dereference issue. This could allow a remote unauthenticated client to cause a denial of service.

References

Affected products

qemu
qemu-kvm
qemu-kvm-ma
qemu-kvm-rhev
virt:av/qemu-kvm
virt:rhel/qemu-kvm

Matching in nixpkgs

pkgs.qemu

Generic and open source machine emulator and virtualizer

pkgs.qemu_kvm

Generic and open source machine emulator and virtualizer

pkgs.qemu_xen

Generic and open source machine emulator and virtualizer

pkgs.qemu-user

QEMU User space emulator - launch executables compiled for one CPU on another CPU

pkgs.qemu_full

Generic and open source machine emulator and virtualizer

pkgs.qemu_test

Generic and open source machine emulator and virtualizer

pkgs.qemu-utils

Generic and open source machine emulator and virtualizer

Package maintainers