CVE Details

Release Date:2015-07-16


The kbdint_next_device function in auth2-chall.c in sshd in OpenSSHthrough 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.

See more information about CVE-2015-5600 from MITRE CVE dictionary and NIST NVD

CVSS v2.0 metrics

NOTE: The following CVSS v2.0 metrics and score provided are preliminary and subject to review.

Base Score: 4.3 Base Metrics: AV:N/AC:M/Au:N/C:N/I:P/A:N
Access Vector: Network Attack Complexity: Medium
Authentication: None required Confidentiality Impact: None
Integrity Impact: Partial Availability Impact: None

Errata information

PlatformErrataRelease Date
Oracle Linux version 5 (openssh)ELSA-2016-35312016-04-03
Oracle Linux version 6 (openssh)ELSA-2016-04662016-03-21
Oracle Linux version 7 (openssh)ELSA-2015-20882015-11-23
Oracle VM version 3.2 (openssh)OVMSA-2016-00702016-06-20
Oracle VM version 3.3 (openssh)OVMSA-2016-00382016-03-21
Oracle VM version 3.4 (openssh)OVMSA-2016-00382016-03-21

This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team