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CVE-2019-3863

CVE-2019-3863

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

A flaw was found in libssh2 before 1.8.1 creating a vulnerability on the SSH client side. A server could send a multiple keyboard interactive response messages whose total length are greater than unsigned char max characters. This value is used by the SSH client as an index to copy memory causing in an out of bounds memory write error.

CVSS 7.5 · High · EPSS 3.4% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • libssh2

    Versions
    • 1.8.1: Affected

    No fix published

  • libssh2 Debian:12

    Affected ranges
    • ECOSYSTEM: < 1.8.0-2.1

    Update to 1.8.0-2.1

  • libssh2 Debian:13

    Affected ranges
    • ECOSYSTEM: < 1.8.0-2.1

    Update to 1.8.0-2.1

  • libssh2 Debian:14

    Affected ranges
    • ECOSYSTEM: < 1.8.0-2.1

    Update to 1.8.0-2.1

  • libssh2 Ubuntu:Pro:14.04:LTS

    Versions
    • 1.4.3-1
    • 1.4.3-2
    • 1.4.3-2ubuntu0.1
    • 1.4.3-2ubuntu0.2
    • 1.4.3-2ubuntu0.2+esm1
    Affected ranges
    • ECOSYSTEM: < 1.4.3-2ubuntu0.2+esm2

    Update to 1.4.3-2ubuntu0.2+esm2

  • libssh2 Ubuntu:Pro:16.04:LTS

    Versions
    • 1.5.0-2
    • 1.5.0-2ubuntu0.1
    Affected ranges
    • ECOSYSTEM: < 1.5.0-2ubuntu0.1+esm1

    Update to 1.5.0-2ubuntu0.1+esm1

  • libssh2 Ubuntu:Pro:18.04:LTS

    Versions
    • 1.8.0-1
    • 1.8.0-1ubuntu0.1
    • 1.8.0-1ubuntu0.1+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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