RHEL 8 : Red Hat Virtualization Host security update [ovirt-4.4.7] (Important) (RHSA-2021:3235)

high Nessus Plugin ID 152688

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Synopsis

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

Description

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:3235 advisory.

- kernel: race condition in net/can/bcm.c leads to local privilege escalation (CVE-2021-3609)

- sssd: shell command injection in sssctl (CVE-2021-3621)

- kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks (CVE-2021-22543)

- kernel: out-of-bounds write in xt_compat_target_from_user() in net/netfilter/x_tables.c (CVE-2021-22555)

- edk2: remote buffer overflow in IScsiHexToBin function in NetworkPkg/IScsiDxe (CVE-2021-38575)

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 RHEL Red Hat Virtualization Host package based on the guidance in RHSA-2021:3235.

Plugin Details

Severity: High

ID: 152688

File Name: redhat-RHSA-2021-3235.nasl

Version: 1.15

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 8/19/2021

Updated: 4/29/2024

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

Risk Information

VPR

Risk Factor: Critical

Score: 9.7

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 8.1

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

CVSS Score Source: CVE-2021-3621

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 8.4

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

Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:redhat:enterprise_linux:redhat-virtualization-host, p-cpe:/a:redhat:enterprise_linux:redhat-virtualization-host-image-update

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: 8/19/2021

Vulnerability Publication Date: 4/20/2021

Exploitable With

CANVAS (CANVAS)

Core Impact

Metasploit (Netfilter x_tables Heap OOB Write Privilege Escalation)

Reference Information

CVE: CVE-2021-22543, CVE-2021-22555, CVE-2021-3609, CVE-2021-3621, CVE-2021-38575

CWE: 119, 362, 78, 787, 863

RHSA: 2021:3235

Detections

Analytics