RHEL 7 : kernel (RHSA-2020:5656)

high Nessus Plugin ID 144554

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-2020:5656 advisory.

- 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: Denial Of Service in the __ipmi_bmc_register() function in drivers/char/ipmi/ipmi_msghandler.c (CVE-2019-19046)

- kernel: mounting a crafted ext4 filesystem image, performing some operations, and unmounting can lead to a use-after-free in ext4_put_super in fs/ext4/super.c (CVE-2019-19447)

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

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

- kernel: sg_write function lacks an sg_remove_request call in a certain failure case (CVE-2020-12770)

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://cwe.mitre.org/data/definitions/119.html

https://cwe.mitre.org/data/definitions/362.html

https://cwe.mitre.org/data/definitions/400.html

https://cwe.mitre.org/data/definitions/401.html

https://cwe.mitre.org/data/definitions/416.html

https://cwe.mitre.org/data/definitions/787.html

https://access.redhat.com/security/cve/CVE-2017-18551

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

https://access.redhat.com/security/cve/CVE-2019-9454

https://access.redhat.com/security/cve/CVE-2019-19046

https://access.redhat.com/security/cve/CVE-2019-19447

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

https://access.redhat.com/security/cve/CVE-2020-12770

https://access.redhat.com/errata/RHSA-2020:5656

https://bugzilla.redhat.com/1707796

https://bugzilla.redhat.com/1757368

https://bugzilla.redhat.com/1774988

https://bugzilla.redhat.com/1781679

https://bugzilla.redhat.com/1818818

https://bugzilla.redhat.com/1824059

https://bugzilla.redhat.com/1834845

Plugin Details

Severity: High

ID: 144554

File Name: redhat-RHSA-2020-5656.nasl

Version: 1.6

Type: local

Agent: unix

Published: 12/22/2020

Updated: 10/12/2021

Supported Sensors: 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:7.6, cpe:/o:redhat:rhel_e4s:7.6, cpe:/o:redhat:rhel_eus:7.6, cpe:/o:redhat:rhel_tus:7.6, 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-headers, 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: 12/22/2020

Vulnerability Publication Date: 5/7/2019

Reference Information

CVE: CVE-2017-18551, CVE-2018-20836, CVE-2019-9454, CVE-2019-19046, CVE-2019-19447, CVE-2019-20636, CVE-2020-12770

BID: 108196

RHSA: 2020:5656

CWE: 119, 362, 400, 401, 416, 787