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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2023-07-11T16:16:56.294Z

Updated: 2024-08-02T06:55:00.939Z

Reserved: 2023-06-21T12:33:29.897Z

Link: CVE-2023-3354

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2023-07-11T17:15:13.387

Modified: 2024-11-21T08:17:05.117

Link: CVE-2023-3354

cve-icon Redhat

Severity : Important

Publid Date: 2023-06-28T00:00:00Z

Links: CVE-2023-3354 - Bugzilla