A flaw was found in the QEMU built-in VNC server. When a...
High severity
Unreviewed
Published
Jul 11, 2023
to the GitHub Advisory Database
•
Updated Mar 21, 2024
Description
Published by the National Vulnerability Database
Jul 11, 2023
Published to the GitHub Advisory Database
Jul 11, 2023
Last updated
Mar 21, 2024
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.
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