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CVE-2023-6683

CVE-2023-6683 · Qemu: vnc: null pointer dereference in qemu_clipboard_request()

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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 6.5 · Medium · EPSS 1.3% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • red hat enterprise linux 8

    Versions
    • ≥ 8100020240314161907.e155f54d: Not affected (rpm)

    No fix published

  • red hat enterprise linux 9

    Versions
    • ≥ 17:8.2.0-11.el9_4: Not affected (rpm)

    No fix published

  • red hat enterprise linux 6

    No fix published

  • red hat enterprise linux 7

    No fix published

  • red hat enterprise linux 8 advanced virtualization

    No fix published

  • qemu Debian:12

    Versions
    • 1:7.2+dfsg-7
    • 1:7.2+dfsg-7+deb12u1
    • 1:7.2+dfsg-7+deb12u2
    • 1:7.2+dfsg-7+deb12u2~bpo11+1
    • 1:7.2+dfsg-7+deb12u3
    Affected ranges
    • ECOSYSTEM: < 1:7.2+dfsg-7+deb12u4

    Update to 1:7.2+dfsg-7+deb12u4

  • qemu Debian:13

    Affected ranges
    • ECOSYSTEM: < 1:8.2.0+ds-5

    Update to 1:8.2.0+ds-5

  • qemu Debian:14

    Affected ranges
    • ECOSYSTEM: < 1:8.2.0+ds-5

    Update to 1:8.2.0+ds-5

  • qemu Ubuntu:22.04:LTS

    Versions
    • 1:6.0+dfsg-2expubuntu1
    • 1:6.0+dfsg-2expubuntu2
    • 1:6.0+dfsg-2expubuntu4
    • 1:6.2+dfsg-2ubuntu5
    • 1:6.2+dfsg-2ubuntu6
    • 1:6.2+dfsg-2ubuntu6.1
    • 1:6.2+dfsg-2ubuntu6.2
    • 1:6.2+dfsg-2ubuntu6.3
    • 1:6.2+dfsg-2ubuntu6.4
    • 1:6.2+dfsg-2ubuntu6.5
    • 1:6.2+dfsg-2ubuntu6.6
    • 1:6.2+dfsg-2ubuntu6.7
    • 1:6.2+dfsg-2ubuntu6.8
    • 1:6.2+dfsg-2ubuntu6.9
    • 1:6.2+dfsg-2ubuntu6.10
    • 1:6.2+dfsg-2ubuntu6.11
    • 1:6.2+dfsg-2ubuntu6.12
    • 1:6.2+dfsg-2ubuntu6.13
    • 1:6.2+dfsg-2ubuntu6.14
    • 1:6.2+dfsg-2ubuntu6.15
    • 1:6.2+dfsg-2ubuntu6.16
    • 1:6.2+dfsg-2ubuntu6.17
    • 1:6.2+dfsg-2ubuntu6.18
    • 1:6.2+dfsg-2ubuntu6.19
    • 1:6.2+dfsg-2ubuntu6.21
    Affected ranges
    • ECOSYSTEM: < 1:6.2+dfsg-2ubuntu6.22

    Update to 1:6.2+dfsg-2ubuntu6.22

Original sources

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