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Amazon Linux AMI : python-paramiko (ALAS-2018-989)

critical Nessus Plugin ID 108850

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Synopsis

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

Description

Authentication bypass in transport.py

transport.py in the SSH server implementation of Paramiko before 1.17.6, 1.18.x before 1.18.5, 2.0.x before 2.0.8, 2.1.x before 2.1.5, 2.2.x before 2.2.3, 2.3.x before 2.3.2, and 2.4.x before 2.4.1 does not properly check whether authentication is completed before processing other requests, as demonstrated by channel-open. A customized SSH client can simply skip the authentication step.
(CVE-2018-7750 )

Solution

Run 'yum update python-paramiko' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2018-989.html

Plugin Details

Severity: Critical

ID: 108850

File Name: ala_ALAS-2018-989.nasl

Version: 1.5

Type: local

Agent: unix

Published: 4/6/2018

Updated: 4/5/2019

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:amazon:linux, p-cpe:/a:amazon:linux:python27-paramiko, p-cpe:/a:amazon:linux:python26-paramiko

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/5/2018

Reference Information

CVE: CVE-2018-7750

ALAS: 2018-989