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Amazon Linux 2 : kernel (ALAS-2018-1087)

high Nessus Plugin ID 118042

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Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

NOTE: CVE-2018-14634 was already fixed in the 4.14 kernel released with the Amazon Linux 2 LTS release. The advisory release date does not accurately reflect the date this was fixed.

An integer overflow flaw was found in the Linux kernel's create_elf_tables() function. An unprivileged local user with access to SUID (or otherwise privileged) binary could use this flaw to escalate their privileges on the system. This issue has been give the code name Mutagen Astronomy.(CVE-2018-14634 )

Solution

If you are already running a 4.14 kernel, no action is required.

If you are running an older kernel, run 'yum update kernel' and reboot your instance to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALAS-2018-1087.html

Plugin Details

Severity: High

ID: 118042

File Name: al2_ALAS-2018-1087.nasl

Version: 1.3

Type: local

Agent: unix

Published: 10/11/2018

Updated: 4/5/2019

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

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

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

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:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:kernel-tools, p-cpe:/a:amazon:linux:kernel-tools-debuginfo, p-cpe:/a:amazon:linux:kernel-tools-devel, p-cpe:/a:amazon:linux:perf, p-cpe:/a:amazon:linux:perf-debuginfo, p-cpe:/a:amazon:linux:python-perf, p-cpe:/a:amazon:linux:python-perf-debuginfo, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:kernel, p-cpe:/a:amazon:linux:kernel-debuginfo, p-cpe:/a:amazon:linux:kernel-debuginfo-common-x86_64, p-cpe:/a:amazon:linux:kernel-devel, p-cpe:/a:amazon:linux:kernel-headers

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: 10/10/2018

Reference Information

CVE: CVE-2018-14634

ALAS: 2018-1087