CentOS 8 : kernel (CESA-2021:1093)

high Nessus Plugin ID 148422

Synopsis

The remote CentOS host is missing one or more security updates.

Description

The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2021:1093 advisory.

- kernel: use after free in eventpoll.c may lead to escalation of privilege (CVE-2020-0466)

- Kernel: KVM: host stack overflow due to lazy update IOAPIC (CVE-2020-27152)

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

- kernel: race conditions caused by wrong locking in net/vmw_vsock/af_vsock.c (CVE-2021-26708)

- kernel: iscsi: unrestricted access to sessions and handles (CVE-2021-27363)

- kernel: out-of-bounds read in libiscsi module (CVE-2021-27364)

- kernel: heap buffer overflow in the iSCSI subsystem (CVE-2021-27365)

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

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://access.redhat.com/errata/RHSA-2021:1093

Plugin Details

Severity: High

ID: 148422

File Name: centos8_RHSA-2021-1093.nasl

Version: 1.3

Type: local

Agent: unix

Published: 4/9/2021

Updated: 5/10/2022

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

Risk Information

VPR

Risk Factor: Critical

Score: 9

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

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

CVSS Score Source: CVE-2021-3347

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

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

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

CVSS Score Source: CVE-2020-28374

Vulnerability Information

CPE: cpe:/o:centos:centos:8, p-cpe:/a:centos:centos:bpftool, p-cpe:/a:centos:centos:kernel, p-cpe:/a:centos:centos:kernel-abi-whitelists, p-cpe:/a:centos:centos:kernel-core, p-cpe:/a:centos:centos:kernel-cross-headers, p-cpe:/a:centos:centos:kernel-debug, p-cpe:/a:centos:centos:kernel-debug-core, p-cpe:/a:centos:centos:kernel-debug-devel, p-cpe:/a:centos:centos:kernel-debug-modules, p-cpe:/a:centos:centos:kernel-debug-modules-extra, p-cpe:/a:centos:centos:kernel-devel, p-cpe:/a:centos:centos:kernel-modules, p-cpe:/a:centos:centos:kernel-modules-extra, p-cpe:/a:centos:centos:kernel-tools, p-cpe:/a:centos:centos:kernel-tools-libs, p-cpe:/a:centos:centos:kernel-tools-libs-devel, p-cpe:/a:centos:centos:perf, p-cpe:/a:centos:centos:python3-perf

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

Exploit Ease: No known exploits are available

Patch Publication Date: 4/6/2021

Vulnerability Publication Date: 11/6/2020

Reference Information

CVE: CVE-2020-0466, CVE-2020-27152, CVE-2020-28374, CVE-2021-3347, CVE-2021-26708, CVE-2021-27363, CVE-2021-27364, CVE-2021-27365

RHSA: 2021:1093