RHEL 7 : kernel (RHSA-2021:0019)

high Nessus Plugin ID 144754

Synopsis

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

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0019 advisory.

- 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: use-after-free in drivers/bluetooth/hci_ldisc.c (CVE-2019-15917)

- kernel: out-of-bounds write via crafted keycode table (CVE-2019-20636)

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 affected packages.

See Also

https://access.redhat.com/security/cve/CVE-2018-20836

https://access.redhat.com/security/cve/CVE-2019-15917

https://access.redhat.com/security/cve/CVE-2019-20636

https://access.redhat.com/errata/RHSA-2021:0019

https://bugzilla.redhat.com/1707796

https://bugzilla.redhat.com/1760100

https://bugzilla.redhat.com/1824059

Plugin Details

Severity: High

ID: 144754

File Name: redhat-RHSA-2021-0019.nasl

Version: 1.8

Type: local

Agent: unix

Published: 1/6/2021

Updated: 9/22/2022

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

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 6.9

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS Score Source: CVE-2018-20836

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

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

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

Vulnerability Information

CPE: cpe:/o:redhat:rhel_aus:7.7, cpe:/o:redhat:rhel_e4s:7.7, cpe:/o:redhat:rhel_eus:7.7, cpe:/o:redhat:rhel_tus:7.7, p-cpe:/a:redhat:enterprise_linux:bpftool, p-cpe:/a:redhat:enterprise_linux:kernel, p-cpe:/a:redhat:enterprise_linux:kernel-abi-whitelists, p-cpe:/a:redhat:enterprise_linux:kernel-bootwrapper, p-cpe:/a:redhat:enterprise_linux:kernel-debug, p-cpe:/a:redhat:enterprise_linux:kernel-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-devel, p-cpe:/a:redhat:enterprise_linux:kernel-kdump, p-cpe:/a:redhat:enterprise_linux:kernel-kdump-devel, p-cpe:/a:redhat:enterprise_linux:kernel-tools, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs-devel, p-cpe:/a:redhat:enterprise_linux:perf, p-cpe:/a:redhat:enterprise_linux:python-perf

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

Exploit Ease: No known exploits are available

Patch Publication Date: 1/5/2021

Vulnerability Publication Date: 5/7/2019

Reference Information

CVE: CVE-2018-20836, CVE-2019-15917, CVE-2019-20636

BID: 108196

RHSA: 2021:0019

CWE: 362, 416, 787