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CVE-2015-5600

CVE-2015-5600

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

This page shows selected source facts. See the linked advisories for the complete description and affected versions.

The kbdint_next_device function in auth2-chall.c in sshd in OpenSSH through 6.9 does not properly restrict the processing of keyboard-interactive devices within a single connection, which makes it easier for remote attackers to conduct brute-force attacks or cause a denial of service (CPU consumption) via a long and duplicative list in the ssh -oKbdInteractiveDevices option, as demonstrated by a modified client that provides a different password for each pam element on this list.

CVSS 8.1 · High · EPSS 9.4% · Fix available

Published
Updated

Stack: system · network

Affected products and versions

  • n/a

    Versions
    • n/a: Affected

    No fix published

  • openssh Debian:12

    Affected ranges
    • ECOSYSTEM: < 1:6.9p1-1

    Update to 1:6.9p1-1

  • openssh Debian:13

    Affected ranges
    • ECOSYSTEM: < 1:6.9p1-1

    Update to 1:6.9p1-1

  • openssh Debian:14

    Affected ranges
    • ECOSYSTEM: < 1:6.9p1-1

    Update to 1:6.9p1-1

  • openssh Ubuntu:14.04:LTS

    Versions
    • 1:6.2p2-6
    • 1:6.2p2-6ubuntu1
    • 1:6.4p1-1
    • 1:6.4p1-2
    • 1:6.5p1-1
    • 1:6.5p1-2
    • 1:6.5p1-3
    • 1:6.5p1-4
    • 1:6.5p1-6
    • 1:6.6p1-1
    • 1:6.6p1-2
    • 1:6.6p1-2ubuntu1
    • 1:6.6p1-2ubuntu2
    Affected ranges
    • ECOSYSTEM: < 1:6.6p1-2ubuntu2.2

    Update to 1:6.6p1-2ubuntu2.2

Original sources

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