RHEL 8 : kernel-rt (RHSA-2020:2171)

medium Nessus Plugin ID 136611
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 packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:2171 advisory.

- Kernel: NetLabel: null pointer dereference while receiving CIPSO packet with null category may cause kernel panic (CVE-2020-10711)

- Kernel: kvm: nVMX: L2 guest may trick the L0 hypervisor to access sensitive L1 resources (CVE-2020-2732)

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://cwe.mitre.org/data/definitions/200.html

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

https://access.redhat.com/security/cve/CVE-2020-2732

https://access.redhat.com/security/cve/CVE-2020-10711

https://access.redhat.com/errata/RHSA-2020:2171

https://bugzilla.redhat.com/1805135

https://bugzilla.redhat.com/1825116

Plugin Details

Severity: Medium

ID: 136611

File Name: redhat-RHSA-2020-2171.nasl

Version: 1.5

Type: local

Agent: unix

Published: 5/15/2020

Updated: 7/21/2021

Dependencies: ssh_get_info.nasl, redhat_repos.nasl, linux_alt_patch_detect.nasl

Risk Information

CVSS Score Source: CVE-2020-2732

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Low

Base Score: 2.3

Temporal Score: 1.7

Vector: AV:A/AC:M/Au:S/C:P/I:N/A:N

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

CVSS v3

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

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

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

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:rhel_aus:8.2, cpe:/o:redhat:rhel_aus:8.4, cpe:/o:redhat:rhel_e4s:8.2, cpe:/o:redhat:rhel_e4s:8.4, cpe:/o:redhat:rhel_eus:8.2, cpe:/o:redhat:rhel_eus:8.4, cpe:/o:redhat:rhel_tus:8.2, cpe:/o:redhat:rhel_tus:8.4, p-cpe:/a:redhat:enterprise_linux:kernel-rt, p-cpe:/a:redhat:enterprise_linux:kernel-rt-core, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-core, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-kvm, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-modules, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-modules-extra, p-cpe:/a:redhat:enterprise_linux:kernel-rt-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-kvm, p-cpe:/a:redhat:enterprise_linux:kernel-rt-modules, p-cpe:/a:redhat:enterprise_linux:kernel-rt-modules-extra

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: 5/14/2020

Vulnerability Publication Date: 2/28/2020

Reference Information

CVE: CVE-2020-2732, CVE-2020-10711

RHSA: 2020:2171

CWE: 200, 476