Amazon Linux AMI : kernel (ALAS-2016-642)

high Nessus Plugin ID 87991

Synopsis

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

Description

Perception Point Research identified a use-after-free vulnerability, representing a local privilege escalation vulnerability in the Linux kernel. Their post contains a detailed analysis of the bug.

kernel-4.1.13-19.30.amzn1 and earlier versions are impacted.

Solution

Run 'yum clean all' followed by 'yum update kernel' to update your system. You will need to reboot your system in order for the new kernel to be running.

See Also

http://www.nessus.org/u?20d57016

https://alas.aws.amazon.com/ALAS-2016-642.html

Plugin Details

Severity: High

ID: 87991

File Name: ala_ALAS-2016-642.nasl

Version: 2.8

Type: local

Agent: unix

Published: 1/20/2016

Updated: 4/11/2019

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

Risk Information

VPR

Risk Factor: Critical

Score: 9.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.3

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

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.5

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:perf, p-cpe:/a:amazon:linux:perf-debuginfo, p-cpe:/a:amazon:linux:kernel-tools-debuginfo, p-cpe:/a:amazon:linux:kernel-tools-devel, p-cpe:/a:amazon:linux:kernel-tools, p-cpe:/a:amazon:linux:kernel-devel, p-cpe:/a:amazon:linux:kernel, p-cpe:/a:amazon:linux:kernel-debuginfo, p-cpe:/a:amazon:linux:kernel-doc, p-cpe:/a:amazon:linux:kernel-headers, p-cpe:/a:amazon:linux:kernel-debuginfo-common-i686, p-cpe:/a:amazon:linux:kernel-debuginfo-common-x86_64, cpe:/o:amazon:linux

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: 1/19/2016

Exploitable With

Core Impact

Reference Information

CVE: CVE-2016-0728

ALAS: 2016-642