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CVE-2019-20840

CVE-2019-20840

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

An issue was discovered in LibVNCServer before 0.9.13. libvncserver/ws_decode.c can lead to a crash because of unaligned accesses in hybiReadAndDecode.

CVSS 7.5 · High · EPSS 2.7% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • n/a

    Versions
    • n/a: Affected

    No fix published

  • libvncserver Debian:12

    Affected ranges
    • ECOSYSTEM: < 0.9.13+dfsg-1

    Update to 0.9.13+dfsg-1

  • libvncserver Debian:13

    Affected ranges
    • ECOSYSTEM: < 0.9.13+dfsg-1

    Update to 0.9.13+dfsg-1

  • libvncserver Debian:14

    Affected ranges
    • ECOSYSTEM: < 0.9.13+dfsg-1

    Update to 0.9.13+dfsg-1

  • x11vnc Ubuntu:14.04:LTS

    Versions
    • 0.9.13-1.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • libvncserver Ubuntu:16.04:LTS

    Versions
    • 0.9.10+dfsg-3
    • 0.9.10+dfsg-3build1
    • 0.9.10+dfsg-3ubuntu0.16.04.1
    • 0.9.10+dfsg-3ubuntu0.16.04.2
    • 0.9.10+dfsg-3ubuntu0.16.04.3
    • 0.9.10+dfsg-3ubuntu0.16.04.4
    Affected ranges
    • ECOSYSTEM: < 0.9.10+dfsg-3ubuntu0.16.04.5

    Update to 0.9.10+dfsg-3ubuntu0.16.04.5

  • libvncserver Ubuntu:18.04:LTS

    Versions
    • 0.9.11+dfsg-1
    • 0.9.11+dfsg-1ubuntu1
    • 0.9.11+dfsg-1ubuntu1.1
    • 0.9.11+dfsg-1ubuntu1.2
    Affected ranges
    • ECOSYSTEM: < 0.9.11+dfsg-1ubuntu1.3

    Update to 0.9.11+dfsg-1ubuntu1.3

  • veyon Ubuntu:20.04:LTS

    Versions
    • 4.2.4+repack1-2
    • 4.2.5+repack1-1
    • 4.3.1+repack1-1
    • 4.3.1+repack1-2
    • 4.3.1+repack1-2build1
    • 4.3.1+repack1-2build2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • veyon Ubuntu:22.04:LTS

    Versions
    • 4.5.3+repack1-1build1
    • 4.5.3+repack1-1build2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • veyon Ubuntu:24.04:LTS

    Versions
    • 4.7.5+repack1-1build2
    • 4.7.5+repack1-1ubuntu1
    • 4.7.5+repack1-1ubuntu3
    • 4.7.5+repack1-1ubuntu4
    • 4.7.5+repack1-1ubuntu5
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • veyon Ubuntu:25.10

    Versions
    • 4.7.5+repack1-1ubuntu6
    • 4.7.5+repack1-1ubuntu7
    • 4.9.7+repack1-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • veyon Ubuntu:26.10

    Versions
    • 4.9.7+repack1-1build1
    • 4.9.7+repack1-1.1
    • 4.9.7+repack1-1.1build1
    • 4.9.7+repack1-1.1build2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • veyon Ubuntu:26.04:LTS

    Versions
    • 4.9.7+repack1-1
    • 4.9.7+repack1-1build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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