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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/errata/RHSA-2024:2135	Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:2962	Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-6683	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2254825	Issue Tracking Patch
https://access.redhat.com/errata/RHSA-2024:2135	Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:2962	Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-6683	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2254825	Issue Tracking Patch
https://security.netapp.com/advisory/ntap-20240223-0001/	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:9.0:::::::*

History

02 May 2025, 15:10

Type	Values Removed	Values Added
References	~~() https://access.redhat.com/errata/RHSA-2024:2135 -~~	() https://access.redhat.com/errata/RHSA-2024:2135 - Third Party Advisory
References	~~() https://access.redhat.com/errata/RHSA-2024:2962 -~~	() https://access.redhat.com/errata/RHSA-2024:2962 - Third Party Advisory
References	~~() https://security.netapp.com/advisory/ntap-20240223-0001/ -~~	() https://security.netapp.com/advisory/ntap-20240223-0001/ - Third Party Advisory

Information

Published : 2024-01-12 19:15

Updated : 2025-05-02 15:10

NVD link : CVE-2023-6683

Mitre link : CVE-2023-6683

CVE.ORG link : CVE-2023-6683

JSON object : View

Products Affected

redhat

enterprise_linux

qemu

qemu

CWE

CWE-476

NULL Pointer Dereference

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