NULL Pointer Dereference Affecting qemu-img package, versions <15:6.2.0-49.module+el8.10.0+21533+3df3c4b6


Severity

Recommended
0.0
medium
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
1.26% (66th percentile)

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  • Snyk IDSNYK-CENTOS8-QEMUIMG-6156071
  • published13 Jan 2024
  • disclosed12 Jan 2024

Introduced: 12 Jan 2024

CVE-2023-6683  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Centos:8 qemu-img to version 15:6.2.0-49.module+el8.10.0+21533+3df3c4b6 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu-img package and not the qemu-img package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

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 Base Scores

version 3.1