Vulnerability Details : CVE-2023-3354
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.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2023-3354
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:openstack_platform:13.0:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*
- cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
- cpe:2.3:a:qemu:qemu:8.1.0:rc0:*:*:*:*:*:*
- cpe:2.3:a:qemu:qemu:8.1.0:rc1:*:*:*:*:*:*
Threat overview for CVE-2023-3354
Top countries where our scanners detected CVE-2023-3354
Top open port discovered on systems with this issue
53
IPs affected by CVE-2023-3354 144,771
Threat actors abusing to this issue?
Yes
Find out if you* are
affected by CVE-2023-3354!
*Directly or indirectly through your vendors, service providers and 3rd parties.
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Exploit prediction scoring system (EPSS) score for CVE-2023-3354
0.07%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 23 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-3354
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
Red Hat, Inc. |
CWE ids for CVE-2023-3354
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by:
- nvd@nist.gov (Primary)
- secalert@redhat.com (Secondary)
References for CVE-2023-3354
-
https://lists.debian.org/debian-lts-announce/2024/03/msg00012.html
[SECURITY] [DLA 3759-1] qemu security update
-
https://access.redhat.com/security/cve/CVE-2023-3354
CVE-2023-3354- Red Hat Customer PortalThird Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MURWGXDIF2WTDXV36T6HFJDBL632AO7R/
[SECURITY] Fedora 38 Update: qemu-7.2.5-1.fc38 - package-announce - Fedora Mailing-ListsMailing List
-
https://bugzilla.redhat.com/show_bug.cgi?id=2216478
2216478 – (CVE-2023-3354) CVE-2023-3354 QEMU: VNC: improper I/O watch removal in TLS handshake can lead to remote unauthenticated denial of serviceIssue Tracking;Patch
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