RHEL 7 : kernel-rt (RHSA-2020:4062)

high Nessus Plugin ID 141026

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Synopsis

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

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:4062 advisory.

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

* kernel: use-after-free in sound/core/timer.c (CVE-2019-19807)

* kernel: out of bounds write in function i2c_smbus_xfer_emulated in drivers/i2c/i2c-core-smbus.c (CVE-2017-18551)

* kernel: race condition in smp_task_timedout() and smp_task_done() in drivers/scsi/libsas/sas_expander.c leads to use-after-free (CVE-2018-20836)

* kernel: out of bounds write in i2c driver leads to local escalation of privilege (CVE-2019-9454)

* kernel: use after free due to race condition in the video driver leads to local privilege escalation (CVE-2019-9458)

Space precludes documenting all of the security fixes in this advisory. See the descriptions of the remaining security fixes in the related Knowledge Article:

https://access.redhat.com/articles/5442481

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.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.9 Release Notes linked from 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-rt package based on the guidance in RHSA-2020:4062.

Plugin Details

Severity: High

ID: 141026

File Name: redhat-RHSA-2020-4062.nasl

Version: 1.10

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 9/29/2020

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: 9.3

Temporal Score: 7.3

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

CVSS Score Source: CVE-2018-20836

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.3

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

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

CVSS Score Source: CVE-2020-14305

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-doc, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug, p-cpe:/a:redhat:enterprise_linux:kernel-rt-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-kvm, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:kernel-rt-trace-kvm, p-cpe:/a:redhat:enterprise_linux:kernel-rt-trace-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-trace, p-cpe:/a:redhat:enterprise_linux:kernel-rt, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-kvm

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: 9/29/2020

Vulnerability Publication Date: 5/7/2019

Reference Information

CVE: CVE-2017-18551, CVE-2018-20836, CVE-2019-15217, CVE-2019-15807, CVE-2019-15917, CVE-2019-16231, CVE-2019-16233, CVE-2019-16994, CVE-2019-17053, CVE-2019-17055, CVE-2019-18808, CVE-2019-19046, CVE-2019-19055, CVE-2019-19058, CVE-2019-19059, CVE-2019-19062, CVE-2019-19063, CVE-2019-19332, CVE-2019-19447, CVE-2019-19523, CVE-2019-19524, CVE-2019-19530, CVE-2019-19534, CVE-2019-19537, CVE-2019-19767, CVE-2019-19807, CVE-2019-20054, CVE-2019-20095, CVE-2019-20636, CVE-2019-9454, CVE-2019-9458, CVE-2020-10690, CVE-2020-10732, CVE-2020-10742, CVE-2020-10751, CVE-2020-10942, CVE-2020-11565, CVE-2020-12770, CVE-2020-12826, CVE-2020-14305, CVE-2020-1749, CVE-2020-2732, CVE-2020-8647, CVE-2020-8649, CVE-2020-9383

BID: 108196

CWE: 119, 125, 200, 250, 319, 349, 362, 400, 416, 476, 772, 787, 908, 94

RHSA: 2020:4062

Detections

Analytics

RHEL 7 : kernel-rt (RHSA-2020:4062)

high Nessus Plugin ID 141026

Synopsis

Description

Solution

See Also

Plugin Details

Risk Information

VPR

Vendor

CVSS v2

CVSS v3

Vulnerability Information

Reference Information