Detections
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CentOS 8 : gnutls and nettle (CESA-2021:4451)

critical Nessus Plugin ID 155052

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Synopsis

The remote CentOS host is missing one or more security updates.

Description

The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2021:4451 advisory.

 - gnutls: Use after free in client key_share extension (CVE-2021-20231)

 - gnutls: Use after free in client_send_params in lib/ext/pre_shared_key.c (CVE-2021-20232)

 - nettle: Remote crash in RSA decryption via manipulated ciphertext (CVE-2021-3580)

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 packages.

See Also

https://access.redhat.com/errata/RHSA-2021:4451

Plugin Details

Severity: Critical

ID: 155052

File Name: centos8_RHSA-2021-4451.nasl

Version: 1.3

Type: local

Agent: unix

Published: 11/11/2021

Updated: 11/24/2023

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

CVSS Score Source: CVE-2021-20232

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:centos:centos:8-stream, p-cpe:/a:centos:centos:gnutls, p-cpe:/a:centos:centos:gnutls-dane, p-cpe:/a:centos:centos:gnutls-devel, p-cpe:/a:centos:centos:nettle, p-cpe:/a:centos:centos:gnutls-utils, p-cpe:/a:centos:centos:nettle-devel, p-cpe:/a:centos:centos:gnutls-c%2b%2b

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: 11/9/2021

Vulnerability Publication Date: 3/12/2021

Reference Information

CVE: CVE-2021-20231, CVE-2021-20232, CVE-2021-3580

RHSA: 2021:4451