RHEL 8 : kpatch-patch (RHSA-2023:1660)

high Nessus Plugin ID 173924

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Synopsis

The remote Red Hat host is missing one or more security updates for kpatch-patch.

Description

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:1660 advisory.

This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel.

Security Fix(es):

* ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF (CVE-2023-0266)

* kernel: FUSE filesystem low-privileged user privileges escalation (CVE-2023-0386)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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 kpatch-patch package based on the guidance in RHSA-2023:1660.

Plugin Details

Severity: High

ID: 173924

File Name: redhat-RHSA-2023-1660.nasl

Version: 1.8

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 4/5/2023

Updated: 11/7/2024

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

Risk Information

VPR

Risk Factor: High

Score: 8.9

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

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

CVSS Score Source: CVE-2023-0386

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.5

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:H/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-372_40_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-372_46_1, cpe:/o:redhat:rhel_eus:8.6, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-372_32_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-372_41_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-372_36_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-372_26_1

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: 4/5/2023

Vulnerability Publication Date: 1/30/2023

CISA Known Exploited Vulnerability Due Dates: 4/20/2023

Exploitable With

Core Impact

Metasploit (Local Privilege Escalation via CVE-2023-0386)

Reference Information

CVE: CVE-2023-0266, CVE-2023-0386

CWE: 282, 416

RHSA: 2023:1660

Detections

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