CVE-2023-3354
This could allow a remote unauthenticated client to cause a denial of service.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.61%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.61% probability · 74th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- qemu/qemu · redhat/openstack platform · redhat/enterprise linux · fedoraproject/fedora
- Source
- secalert@redhat.com
References
- https://access.redhat.com/security/cve/CVE-2023-3354Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2216478Issue Tracking, Patch
- https://lists.debian.org/debian-lts-announce/2024/03/msg00012.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MURWGXDIF2WTDXV36T6HFJDBL632AO7R/Mailing List
- https://access.redhat.com/security/cve/CVE-2023-3354Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2216478Issue Tracking, Patch
- https://lists.debian.org/debian-lts-announce/2024/03/msg00012.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MURWGXDIF2WTDXV36T6HFJDBL632AO7R/Mailing List
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.