RHEL 7 : kernel-rt (RHSA-2023:7424)

high Nessus Plugin ID 186043

Synopsis

The remote Red Hat host is missing one or more security updates for kernel-rt.

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:7424 advisory.

- hw: Intel: Gather Data Sampling (GDS) side channel vulnerability (CVE-2022-40982)

- kernel: net/sched: sch_qfq component can be exploited if in qfq_change_agg function happens qfq_enqueue overhead (CVE-2023-3611)

- kernel: net/sched: cls_fw component can be exploited as result of failure in tcf_change_indev function (CVE-2023-3776)

- kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route (CVE-2023-4128, CVE-2023-4206, CVE-2023-4207, CVE-2023-4208)

- kernel: out-of-bounds write in qfq_change_class function (CVE-2023-31436)

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 kernel-rt package based on the guidance in RHSA-2023:7424.

See Also

http://www.nessus.org/u?3bc6d37f

https://access.redhat.com/errata/RHSA-2023:7424

https://access.redhat.com/security/updates/classification/#important

https://access.redhat.com/solutions/7027704

https://bugzilla.redhat.com/show_bug.cgi?id=2223949

https://bugzilla.redhat.com/show_bug.cgi?id=2225097

https://bugzilla.redhat.com/show_bug.cgi?id=2225191

https://bugzilla.redhat.com/show_bug.cgi?id=2225511

Plugin Details

Severity: High

ID: 186043

File Name: redhat-RHSA-2023-7424.nasl

Version: 1.2

Type: local

Agent: unix

Published: 11/21/2023

Updated: 4/28/2024

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

Risk Information

VPR

Risk Factor: High

Score: 7.1

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

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

CVSS Score Source: CVE-2023-4208

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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

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

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug, p-cpe:/a:redhat:enterprise_linux:kernel-rt, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-doc, p-cpe:/a:redhat:enterprise_linux:kernel-rt-trace-devel, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-kvm, p-cpe:/a:redhat:enterprise_linux:kernel-rt-trace-kvm, p-cpe:/a:redhat:enterprise_linux:kernel-rt-kvm, p-cpe:/a:redhat:enterprise_linux:kernel-rt-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-trace

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: 11/21/2023

Vulnerability Publication Date: 7/21/2023

Reference Information

CVE: CVE-2022-40982, CVE-2023-31436, CVE-2023-3611, CVE-2023-3776, CVE-2023-4128, CVE-2023-4206, CVE-2023-4207, CVE-2023-4208

CWE: 200, 416, 787

RHSA: 2023:7424