RHEL 8 : kpatch-patch (RHSA-2021:0689)

high Nessus Plugin ID 147010

Language:

New! Vulnerability Priority Rating (VPR)

Tenable calculates a dynamic VPR for every vulnerability. VPR combines vulnerability information with threat intelligence and machine learning algorithms to predict which vulnerabilities are most likely to be exploited in attacks. Read more about what VPR is and how it is different from CVSS.

VPR Score: 6.7

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-2021:0689 advisory.

- kernel: bad kfree in auditfilter.c may lead to escalation of privilege (CVE-2020-0444)

- kernel: locking issue in drivers/tty/tty_jobctrl.c can lead to an use-after-free (CVE-2020-29661)

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.

Plugin Details

Severity: High

ID: 147010

File Name: redhat-RHSA-2021-0689.nasl

Version: 1.4

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 3/3/2021

Updated: 3/24/2021

Dependencies: ssh_get_info.nasl

Risk Information

Risk Factor: High

VPR Score: 6.7

CVSS Score Source: CVE-2020-29661

CVSS v2.0

Base Score: 7.2

Temporal Score: 5.6

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

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

CVSS v3.0

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: E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:redhat:rhel_e4s:8.1, cpe:/o:redhat:rhel_eus:8.1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-147_13_2, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-147_20_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-147_24_2, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-147_27_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-147_32_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-147_34_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-147_38_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-147_8_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: 3/3/2021

Vulnerability Publication Date: 12/9/2020

Reference Information

CVE: CVE-2020-0444, CVE-2020-29661

RHSA: 2021:0689

CWE: 99, 244, 416, 667