RHEL 8 : Red Hat Virtualization Host security and bug fix update [ovirt-4.4.9] 0-day (Important) (RHSA-2021:4750)

critical Nessus Plugin ID 155654
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

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

Description

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:4750 advisory.

- libssh: NULL pointer dereference in sftpserver.c if ssh_buffer_new returns NULL (CVE-2020-16135)

- kernel: out-of-bounds write due to a heap buffer overflow in __hidinput_change_resolution_multipliers() of hid-input.c (CVE-2021-0512)

- Ansible: ansible-connection module discloses sensitive info in traceback error message (CVE-2021-3620)

- kernel: Insufficient validation of user-supplied sizes for the MSG_CRYPTO message type (CVE-2021-43267)

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 redhat-virtualization-host-image-update package.

See Also

https://cwe.mitre.org/data/definitions/20.html

https://cwe.mitre.org/data/definitions/120.html

https://cwe.mitre.org/data/definitions/209.html

https://cwe.mitre.org/data/definitions/476.html

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

https://access.redhat.com/security/cve/CVE-2020-16135

https://access.redhat.com/security/cve/CVE-2021-0512

https://access.redhat.com/security/cve/CVE-2021-3620

https://access.redhat.com/security/cve/CVE-2021-43267

https://access.redhat.com/errata/RHSA-2021:4750

https://bugzilla.redhat.com/1862456

https://bugzilla.redhat.com/1974491

https://bugzilla.redhat.com/1975767

https://bugzilla.redhat.com/2020362

Plugin Details

Severity: Critical

ID: 155654

File Name: redhat-RHSA-2021-4750.nasl

Version: 1.2

Type: local

Agent: unix

Published: 11/20/2021

Updated: 11/20/2021

Dependencies: ssh_get_info.nasl, redhat_repos.nasl

Risk Information

CVSS Score Source: CVE-2021-43267

VPR

Risk Factor: Critical

Score: 9.4

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

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

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/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:enterprise_linux:8, 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 Ease: No known exploits are available

Patch Publication Date: 11/19/2021

Vulnerability Publication Date: 7/29/2020

Reference Information

CVE: CVE-2020-16135, CVE-2021-0512, CVE-2021-3620, CVE-2021-43267

RHSA: 2021:4750

CWE: 20, 120, 209, 476, 787