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RHEL 7 : kpatch-patch (RHSA-2020:0027)

high Nessus Plugin ID 132686

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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 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:0027 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):

 * Kernel: KVM: OOB memory access via mmio ring buffer (CVE-2019-14821)

 * kernel: local attacker can trigger multiple use-after-free conditions results in privilege escalation (CVE-2019-15239)

 For more details about the security issue(s), including the impact, a CVSS score, acknowledgements, 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-2020:0027.

See Also

https://access.redhat.com/errata/RHSA-2020:0027

https://bugzilla.redhat.com/show_bug.cgi?id=1746708

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

https://bugzilla.redhat.com/show_bug.cgi?id=1747353

http://www.nessus.org/u?2458aafd

Plugin Details

Severity: High

ID: 132686

File Name: redhat-RHSA-2020-0027.nasl

Version: 1.11

Type: local

Agent: unix

Published: 1/7/2020

Updated: 11/7/2024

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

Risk Information

VPR

Risk Factor: High

Score: 7.3

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

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

CVSS Score Source: CVE-2019-15239

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.9

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:P/RL:O/RC:C

CVSS Score Source: CVE-2019-14821

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-1062_4_3, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-1062_4_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-1062_4_2, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-1062_1_2, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-1062_1_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-1062

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: 1/6/2020

Vulnerability Publication Date: 8/20/2019

Reference Information

CVE: CVE-2019-14821, CVE-2019-15239

CWE: 416, 787

RHSA: 2020:0027