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CVE-2023-3255

CVE-2023-3255 · Qemu: vnc: infinite loop in inflate_buffer() leads to denial of service

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. A wrong exit condition may lead to an infinite loop when inflating an attacker controlled zlib buffer in the `inflate_buffer` function. This could allow a remote authenticated client who is able to send a clipboard to the VNC server to trigger a denial of service.

CVSS 6.5 · Medium · EPSS 1.9% · 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~bpo11+1
    Affected ranges
    • ECOSYSTEM: < 1:7.2+dfsg-7+deb12u2

    Update to 1:7.2+dfsg-7+deb12u2

  • qemu Debian:13

    Affected ranges
    • ECOSYSTEM: < 1:8.0.4+dfsg-1

    Update to 1:8.0.4+dfsg-1

  • qemu Debian:14

    Affected ranges
    • ECOSYSTEM: < 1:8.0.4+dfsg-1

    Update to 1:8.0.4+dfsg-1

  • 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
    Affected ranges
    • ECOSYSTEM: < 1:6.2+dfsg-2ubuntu6.16

    Update to 1:6.2+dfsg-2ubuntu6.16

Original sources

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