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FreeBSD : OpenSSH -- MaxAuthTries limit bypass via duplicates in KbdInteractiveDevices (5b74a5bc-348f-11e5-ba05-c80aa9043978)

high Nessus Plugin ID 85033

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Synopsis

The remote FreeBSD host is missing a security-related update.

Description

It was discovered that the OpenSSH sshd daemon did not check the list of keyboard-interactive authentication methods for duplicates. A remote attacker could use this flaw to bypass the MaxAuthTries limit, making it easier to perform password guessing attacks.

Solution

Update the affected package.

See Also

https://access.redhat.com/security/cve/cve-2015-5600

http://www.nessus.org/u?0b40b3cd

Plugin Details

Severity: High

ID: 85033

File Name: freebsd_pkg_5b74a5bc348f11e5ba05c80aa9043978.nasl

Version: 2.7

Type: local

Published: 7/28/2015

Updated: 1/6/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.0

CVSS v2

Risk Factor: High

Base Score: 8.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:C

Vulnerability Information

CPE: cpe:/o:freebsd:freebsd, p-cpe:/a:freebsd:freebsd:openssh-portable

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Patch Publication Date: 7/27/2015

Vulnerability Publication Date: 7/21/2015

Reference Information

CVE: CVE-2015-5600

FreeBSD: SA-15:16.openssh