RHEL 7 : telnet (RHSA-2022:0158)

critical Nessus Plugin ID 156819

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Synopsis

The remote Red Hat host is missing a security update for telnet.

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2022:0158 advisory.

Telnet is a popular protocol for logging in to remote systems over the Internet. The telnet-server packages include a telnet service that supports remote logins into the host machine. The telnet service is disabled by default.

Security Fix(es):

* telnet-server: no bounds checks in nextitem() function allows to remotely execute arbitrary code (CVE-2020-10188)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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 RHEL telnet package based on the guidance in RHSA-2022:0158.

Plugin Details

Severity: Critical

ID: 156819

File Name: redhat-RHSA-2022-0158.nasl

Version: 1.10

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 1/19/2022

Updated: 11/7/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2020-10188

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

CPE: cpe:/o:redhat:rhel_e4s:7.7, cpe:/o:redhat:rhel_aus:7.7, p-cpe:/a:redhat:enterprise_linux:telnet, p-cpe:/a:redhat:enterprise_linux:telnet-server, cpe:/o:redhat:rhel_tus:7.7

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/18/2022

Vulnerability Publication Date: 3/6/2020

Reference Information

CVE: CVE-2020-10188

CWE: 119

RHSA: 2022:0158

Detections

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