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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2023-3354

Improper i/o watch removal in tls handshake can lead to remote unauthenticated denial of service

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Status
Published
Published
Updated
Assigning organization
redhat

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

n/a qemu

Default version status: affected

Red Hat Red Hat Enterprise Linux 6

Default version status: unaffected

Red Hat Red Hat Enterprise Linux 7

Default version status: unaffected

Red Hat Red Hat Enterprise Linux 7

Default version status: affected

Red Hat Red Hat Enterprise Linux 8

Default version status: affected

Red Hat Red Hat Enterprise Linux 8 Advanced Virtualization

Default version status: affected

Red Hat Red Hat Enterprise Linux 9

Default version status: affected

Red Hat Red Hat OpenStack Platform 13 (Queens)

Default version status: affected

Fedora Fedora

Default version status: affected

Fedora Extra Packages for Enterprise Linux

Default version status: unaffected

References