RHEL 7 : RHV-H security update (redhat-virtualization-host) 4.3.16 (Important) (RHSA-2021:2519)

high Nessus Plugin ID 150951
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 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:2519 advisory.

- hw: vt-d related privilege escalation (CVE-2020-24489)

- dhcp: stack-based buffer overflow when parsing statements with colon-separated hex digits in config or lease files in dhcpd and dhclient (CVE-2021-25217)

- glib: integer overflow in g_bytes_new function on 64-bit platforms due to an implicit cast from 64 bits to 32 bits (CVE-2021-27219)

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-release-virtualization-host, redhat-virtualization-host-image-update and / or redhat- virtualization-host-image-update-placeholder packages.

See Also

https://cwe.mitre.org/data/definitions/190.html

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

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

https://cwe.mitre.org/data/definitions/459.html

https://access.redhat.com/security/cve/CVE-2021-27219

https://bugzilla.redhat.com/1929858

https://access.redhat.com/security/cve/CVE-2020-24489

https://bugzilla.redhat.com/1962650

https://access.redhat.com/security/cve/CVE-2021-25217

https://bugzilla.redhat.com/1963258

https://access.redhat.com/errata/RHSA-2021:2519

Plugin Details

Severity: High

ID: 150951

File Name: redhat-RHSA-2021-2519.nasl

Version: 1.5

Type: local

Agent: unix

Published: 6/22/2021

Updated: 10/7/2021

Dependencies: ssh_get_info.nasl, redhat_repos.nasl

Risk Information

CVSS Score Source: CVE-2020-24489

VPR

Risk Factor: High

Score: 7.3

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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

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

Vulnerability Information

CPE: cpe:2.3:o:redhat:enterprise_linux:7:*:*:*:*:*:*:*, p-cpe:2.3:a:redhat:enterprise_linux:redhat-release-virtualization-host:*:*:*:*:*:*:*, p-cpe:2.3:a:redhat:enterprise_linux:redhat-virtualization-host-image-update:*:*:*:*:*:*:*, p-cpe:2.3:a:redhat:enterprise_linux:redhat-virtualization-host-image-update-placeholder:*:*:*:*:*:*:*

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: 6/22/2021

Vulnerability Publication Date: 2/15/2021

Reference Information

CVE: CVE-2021-27219, CVE-2021-25217, CVE-2020-24489

CWE: 119, 190, 787, 459

IAVB: 2021-B-0032

RHSA: 2021:2519