Vulnerability Details : CVE-2023-6683
A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. The qemu_clipboard_request() function can be reached before vnc_server_cut_text_caps() was called and had the chance to initialize the clipboard peer, leading to a NULL pointer dereference. This could allow a malicious authenticated VNC client to crash QEMU and trigger a denial of service.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2023-6683
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-6683
0.08%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 37 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-6683
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
2.8
|
3.6
|
NIST | 2024-01-22 |
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
2.8
|
3.6
|
Red Hat, Inc. | 2024-01-12 |
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
N/A
|
N/A
|
RedHat-CVE-2023-6683 | 2024-01-12 |
CWE ids for CVE-2023-6683
-
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-2023-6683
-
https://access.redhat.com/errata/RHSA-2024:2135
RHSA-2024:2135 - Security Advisory - Red Hat Customer Portal
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https://access.redhat.com/security/cve/CVE-2023-6683
CVE-2023-6683- Red Hat Customer PortalThird Party Advisory
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https://access.redhat.com/errata/RHSA-2024:2962
RHSA-2024:2962 - Security Advisory - Red Hat Customer Portal
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https://bugzilla.redhat.com/show_bug.cgi?id=2254825
2254825 – (CVE-2023-6683) CVE-2023-6683 QEMU: VNC: NULL pointer dereference in qemu_clipboard_request()Issue Tracking;Patch
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https://security.netapp.com/advisory/ntap-20240223-0001/
CVE-2023-6683 QEMU Vulnerability in NetApp Products | NetApp Product SecurityThird Party Advisory
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