RHEL 6 : kernel-rt (RHSA-2020:0100)

high Nessus Plugin ID 132947

Synopsis

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

Description

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:0100 advisory.

- kernel: TLB flush happens too late on mremap (CVE-2018-18281)

- kernel: Use-after-free in __blk_drain_queue() function in block/blk-core.c (CVE-2018-20856)

- kernel: fix race condition between mmget_not_zero()/get_task_mm() and core dumping (CVE-2019-11599)

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/errata/RHSA-2020:0100

https://access.redhat.com/security/cve/CVE-2018-20856

https://access.redhat.com/security/cve/CVE-2019-11599

https://access.redhat.com/security/cve/CVE-2018-18281

https://bugzilla.redhat.com/1645121

https://bugzilla.redhat.com/1705937

https://bugzilla.redhat.com/1738705

Plugin Details

Severity: High

ID: 132947

File Name: redhat-RHSA-2020-0100.nasl

Version: 1.6

Type: local

Agent: unix

Published: 1/16/2020

Updated: 1/23/2023

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

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: Medium

Base Score: 6.9

Temporal Score: 5.4

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

Temporal Vector: CVSS2#E:POC/RL:OF/RC:C

CVSS Score Source: CVE-2019-11599

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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:P/RL:O/RC:C

CVSS Score Source: CVE-2018-20856

Vulnerability Information

CPE: cpe:2.3:o:redhat:enterprise_linux:6:*:*:*:*:*:*:*, p-cpe:2.3:a:redhat:enterprise_linux:kernel-rt:*:*:*:*:*:*:*, p-cpe:2.3:a:redhat:enterprise_linux:kernel-rt-debug:*:*:*:*:*:*:*, p-cpe:2.3:a:redhat:enterprise_linux:kernel-rt-debug-devel:*:*:*:*:*:*:*, p-cpe:2.3:a:redhat:enterprise_linux:kernel-rt-devel:*:*:*:*:*:*:*, p-cpe:2.3:a:redhat:enterprise_linux:kernel-rt-doc:*:*:*:*:*:*:*, p-cpe:2.3:a:redhat:enterprise_linux:kernel-rt-firmware:*:*:*:*:*:*:*, p-cpe:2.3:a:redhat:enterprise_linux:kernel-rt-trace:*:*:*:*:*:*:*, p-cpe:2.3:a:redhat:enterprise_linux:kernel-rt-trace-devel:*:*:*:*:*:*:*, p-cpe:2.3:a:redhat:enterprise_linux:kernel-rt-vanilla:*:*:*:*:*:*:*, p-cpe:2.3:a:redhat:enterprise_linux:kernel-rt-vanilla-devel:*:*:*:*:*:*:*

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: 1/14/2020

Vulnerability Publication Date: 10/3/2018

Reference Information

CVE: CVE-2018-20856, CVE-2018-18281, CVE-2019-11599

CWE: 119, 362, 672, 667

RHSA: 2020:0100