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RHEL 6 / 7 : sudo (RHSA-2017:1574)

high Nessus Plugin ID 101023

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Synopsis

The remote Red Hat host is missing one or more security updates.

Description

An update for sudo is now available for Red Hat Enterprise Linux 5 Extended Lifecycle Support, Red Hat Enterprise Linux 6, and Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The sudo packages contain the sudo utility which allows system administrators to provide certain users with the permission to execute privileged commands, which are used for system management purposes, without having to log in as root.

Security Fix(es) :

* 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

Update the affected sudo, sudo-debuginfo and / or sudo-devel packages.

See Also

https://www.sudo.ws/alerts/linux_tty.html

https://access.redhat.com/errata/RHSA-2017:1574

https://access.redhat.com/security/cve/cve-2017-1000368

Plugin Details

Severity: High

ID: 101023

File Name: redhat-RHSA-2017-1574.nasl

Version: 3.17

Type: local

Agent: unix

Published: 6/23/2017

Updated: 10/24/2019

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.5

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS v3

Risk Factor: High

Base Score: 8.2

Temporal Score: 7.1

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

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

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:sudo-debuginfo, p-cpe:/a:redhat:enterprise_linux:sudo-devel, cpe:/o:redhat:enterprise_linux:5, cpe:/o:redhat:enterprise_linux:7, cpe:/o:redhat:enterprise_linux:7.3, cpe:/o:redhat:enterprise_linux:7.4, p-cpe:/a:redhat:enterprise_linux:sudo, cpe:/o:redhat:enterprise_linux:6, cpe:/o:redhat:enterprise_linux:7.5, cpe:/o:redhat:enterprise_linux:7.7, cpe:/o:redhat:enterprise_linux:7.6

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/22/2017

Vulnerability Publication Date: 6/5/2017

Reference Information

CVE: CVE-2017-1000368

RHSA: 2017:1574