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CentOS 6 : sudo (RHSA-2020:0726)

high Nessus Plugin ID 134385

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Synopsis

The remote CentOS Linux host is missing a security update.

Description

The remote CentOS Linux 6 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2020:0726 advisory.

 - In Sudo before 1.8.26, if pwfeedback is enabled in /etc/sudoers, users can trigger a stack-based buffer overflow in the privileged sudo process. (pwfeedback is a default setting in Linux Mint and elementary OS;
 however, it is NOT the default for upstream and many other packages, and would exist only if enabled by an administrator.) The attacker needs to deliver a long string to the stdin of getln() in tgetpass.c.
 (CVE-2019-18634)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

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

See Also

https://access.redhat.com/errata/RHSA-2020:0726

Plugin Details

Severity: High

ID: 134385

File Name: centos_RHSA-2020-0726.nasl

Version: 1.3

Type: local

Agent: unix

Published: 3/11/2020

Updated: 10/9/2024

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

Risk Information

VPR

Risk Factor: High

Score: 7.4

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.6

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

CVSS Score Source: CVE-2019-18634

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:centos:centos:sudo-devel, p-cpe:/a:centos:centos:sudo, cpe:/o:centos:centos:6

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/10/2020

Vulnerability Publication Date: 1/29/2020

Reference Information

CVE: CVE-2019-18634

RHSA: 2020:0726