Amazon Linux AMI : sudo (ALAS-2017-855)

high Nessus Plugin ID 101272
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

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

Description

It was found that the original fix for CVE-2017-1000367 was incomplete. A flaw was found in the way sudo parsed tty information from the process status file in the proc filesystem. A local user with privileges to execute commands via sudo could use this flaw to escalate their privileges to root. (CVE-2017-1000368)

Solution

Run 'yum update sudo' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2017-855.html

Plugin Details

Severity: High

ID: 101272

File Name: ala_ALAS-2017-855.nasl

Version: 3.7

Type: local

Agent: unix

Published: 7/7/2017

Updated: 7/13/2018

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 6.5

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: 8.2

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

Vulnerability Information

CPE: cpe:2.3:o:amazon:linux:*:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:sudo:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:sudo-debuginfo:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:sudo-devel:*:*:*:*:*:*:*

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

Patch Publication Date: 7/6/2017

Reference Information

CVE: CVE-2017-1000368

RHSA: 2017:1574

ALAS: 2017-855