RHEL 7 : kernel (RHSA-2021:2732)

high Nessus Plugin ID 151858

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-2021:2732 advisory.

- kernel: SCSI target (LIO) write to any block on ILO backstore (CVE-2020-28374)

- kernel: use-after-free in net/bluetooth/hci_event.c when destroying an hci_chan (CVE-2021-33034)

- kernel: Use after free via PI futex state (CVE-2021-3347)

- kernel: size_t-to-int conversion vulnerability in the filesystem layer (CVE-2021-33909)

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-2020-28374

https://access.redhat.com/security/cve/CVE-2021-3347

https://access.redhat.com/security/cve/CVE-2021-33034

https://access.redhat.com/security/cve/CVE-2021-33909

https://access.redhat.com/errata/RHSA-2021:2732

https://bugzilla.redhat.com/1899804

https://bugzilla.redhat.com/1922249

https://bugzilla.redhat.com/1961305

https://bugzilla.redhat.com/1970273

Plugin Details

Severity: High

ID: 151858

File Name: redhat-RHSA-2021-2732.nasl

Version: 1.10

Type: local

Agent: unix

Published: 7/21/2021

Updated: 1/23/2023

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

Risk Information

VPR

Risk Factor: Critical

Score: 9.5

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.3

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

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

CVSS Score Source: CVE-2021-33909

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.7

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

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

CVSS Score Source: CVE-2020-28374

Vulnerability Information

CPE: cpe:/o:redhat:rhel_aus:7.4, cpe:/o:redhat:rhel_e4s:7.4, cpe:/o:redhat:rhel_tus:7.4, 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-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 Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/20/2021

Vulnerability Publication Date: 1/13/2021

Reference Information

CVE: CVE-2020-28374, CVE-2021-3347, CVE-2021-33034, CVE-2021-33909

RHSA: 2021:2732

IAVA: 2021-A-0350

CWE: 20, 416, 787