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Amazon Linux AMI : sudo (ALAS-2019-1309)

high Nessus Plugin ID 129852

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Synopsis

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

Description

When sudo is configured to allow a user to run commands as an arbitrary user via the ALL keyword in a Runas specification, it is possible to run commands as root by specifying the user ID -1 or 4294967295.

This can be used by a user with sufficient sudo privileges to run commands as root even if the Runas specification explicitly disallows root access as long as the ALL keyword is listed first in the Runas specification. (CVE-2019-14287)

Further details can be found here:
https://www.sudo.ws/alerts/minus_1_uid.html

Solution

Run 'yum update sudo' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2019-1309.html

Plugin Details

Severity: High

ID: 129852

File Name: ala_ALAS-2019-1309.nasl

Version: 1.7

Type: local

Agent: unix

Published: 10/15/2019

Updated: 1/23/2023

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: 9

Temporal Score: 7.4

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

CVSS Score Source: CVE-2019-14287

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 8.2

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:sudo, p-cpe:/a:amazon:linux:sudo-debuginfo, p-cpe:/a:amazon:linux:sudo-devel, 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: 10/12/2019

Vulnerability Publication Date: 10/17/2019

Exploitable With

Core Impact

Reference Information

CVE: CVE-2019-14287

ALAS: 2019-1309

IAVA: 2019-A-0378-S