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.
Metrics
Affected Vendors & Products
Advisories
| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-3759-1 | qemu security update |
EUVD |
EUVD-2023-44021 | 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. |
Ubuntu USN |
USN-6567-1 | QEMU vulnerabilities |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
No history.
Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2025-02-13T16:55:08.379Z
Reserved: 2023-06-21T12:33:29.897Z
Link: CVE-2023-3354
No data.
Status : Modified
Published: 2023-07-11T17:15:13.387
Modified: 2024-11-21T08:17:05.117
Link: CVE-2023-3354
OpenCVE Enrichment
No data.
Debian DLA
EUVD
Ubuntu USN