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Amazon Linux AMI : openssh (ALAS-2016-770)

high Nessus Plugin ID 94976

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Synopsis

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

Description

It was discovered that the OpenSSH sshd daemon fetched PAM environment settings before running the login program. In configurations with UseLogin=yes and the pam_env PAM module configured to read user environment settings, a local user could use this flaw to execute arbitrary code as root.

Solution

Run 'yum update openssh' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2016-770.html

Plugin Details

Severity: High

ID: 94976

File Name: ala_ALAS-2016-770.nasl

Version: 3.2

Type: local

Agent: unix

Published: 11/21/2016

Updated: 4/18/2018

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.2

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

CVSS v3

Risk Factor: High

Base Score: 7.8

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:openssh, p-cpe:/a:amazon:linux:openssh-clients, p-cpe:/a:amazon:linux:openssh-debuginfo, p-cpe:/a:amazon:linux:openssh-keycat, p-cpe:/a:amazon:linux:openssh-ldap, p-cpe:/a:amazon:linux:openssh-server, p-cpe:/a:amazon:linux:pam_ssh_agent_auth, cpe:/o:amazon:linux

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

Patch Publication Date: 11/18/2016

Reference Information

CVE: CVE-2015-8325

ALAS: 2016-770