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Amazon Linux AMI : libssh2 (ALAS-2016-683)

medium Nessus Plugin ID 90365

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Synopsis

The remote Amazon Linux AMI host is missing a security update.

Description

A type confusion issue was found in the way libssh2 generated ephemeral secrets for the diffie-hellman-group1 and diffie-hellman-group14 key exchange methods. This would cause an SSHv2 Diffie-Hellman handshake to use significantly less secure random parameters.

Solution

Run 'yum update libssh2' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2016-683.html

Plugin Details

Severity: Medium

ID: 90365

File Name: ala_ALAS-2016-683.nasl

Version: 2.4

Type: local

Agent: unix

Published: 4/7/2016

Updated: 4/18/2018

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.3

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

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:libssh2-debuginfo, p-cpe:/a:amazon:linux:libssh2-devel, p-cpe:/a:amazon:linux:libssh2, cpe:/o:amazon:linux, p-cpe:/a:amazon:linux:libssh2-docs

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Patch Publication Date: 4/6/2016

Reference Information

CVE: CVE-2016-0787

ALAS: 2016-683