Detections
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RHEL 7 : kernel (RHSA-2022:1104)

high Nessus Plugin ID 159398

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Synopsis

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

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2022:1104 advisory.

 The kernel packages contain the Linux kernel, the core of any Linux operating system.

 Security Fix(es):

 * kernel: use after free in eventpoll.c may lead to escalation of privilege (CVE-2020-0466)

 * kernel: Use After Free in unix_gc() which could result in a local privilege escalation (CVE-2021-0920)

 * kernel: fget: check that the fd still exists after getting a ref to it (CVE-2021-4083)

 * kernel: possible privileges escalation due to missing TLB flush (CVE-2022-0330)

 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 these issues but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL kernel package based on the guidance in RHSA-2022:1104.

See Also

http://www.nessus.org/u?27fd801f

https://access.redhat.com/security/updates/classification/#important

https://access.redhat.com/errata/RHSA-2022:1104

https://bugzilla.redhat.com/show_bug.cgi?id=1920480

https://bugzilla.redhat.com/show_bug.cgi?id=2029923

https://bugzilla.redhat.com/show_bug.cgi?id=2031930

https://bugzilla.redhat.com/show_bug.cgi?id=2042404

Plugin Details

Severity: High

ID: 159398

File Name: redhat-RHSA-2022-1104.nasl

Version: 1.12

Type: local

Agent: unix

Published: 4/1/2022

Updated: 11/7/2024

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

Risk Information

VPR

Risk Factor: High

Score: 7.4

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6

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

CVSS Score Source: CVE-2020-0466

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.2

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:F/RL:O/RC:C

CVSS Score Source: CVE-2022-0330

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:kernel-tools, p-cpe:/a:redhat:enterprise_linux:kernel, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs-devel, p-cpe:/a:redhat:enterprise_linux:kernel-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs, cpe:/o:redhat:rhel_aus:7.4, p-cpe:/a:redhat:enterprise_linux:python-perf, p-cpe:/a:redhat:enterprise_linux:kernel-devel, p-cpe:/a:redhat:enterprise_linux:kernel-debug, p-cpe:/a:redhat:enterprise_linux:perf

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: 3/29/2022

Vulnerability Publication Date: 12/14/2020

CISA Known Exploited Vulnerability Due Dates: 6/13/2022

Reference Information

CVE: CVE-2020-0466, CVE-2021-0920, CVE-2021-4083, CVE-2022-0330

CWE: 281, 362, 416

RHSA: 2022:1104