RHEL 7 : kernel (RHSA-2020:2851)

high Nessus Plugin ID 138171

Synopsis

The remote Red Hat host is missing one or more security updates.

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:2851 advisory.

- kernel: usb: missing size check in the __usb_get_extra_descriptor() leading to DoS (CVE-2018-20169)

- kernel: denial of service via ioctl call in network tun handling (CVE-2018-7191)

- kernel: Count overflow in FUSE request leading to use-after-free issues. (CVE-2019-11487)

- kernel: use-after-free in arch/x86/lib/insn-eval.c (CVE-2019-13233)

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

- kernel: memory leak in register_queue_kobjects() in net/core/net-sysfs.c leads to denial of service (CVE-2019-15916)

- kernel: powerpc: incomplete Spectre-RSB mitigation leads to information exposure (CVE-2019-18660)

- kernel: perf_event_open() and execve() race in setuid programs allows a data leak (CVE-2019-3901)

- Kernel: vfio: access to disabled MMIO space of some devices may lead to DoS scenario (CVE-2020-12888)

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/248.html

https://cwe.mitre.org/data/definitions/400.html

https://cwe.mitre.org/data/definitions/416.html

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

https://cwe.mitre.org/data/definitions/667.html

https://cwe.mitre.org/data/definitions/787.html

https://access.redhat.com/security/cve/CVE-2018-7191

https://access.redhat.com/security/cve/CVE-2018-20169

https://access.redhat.com/security/cve/CVE-2019-3901

https://access.redhat.com/security/cve/CVE-2019-11487

https://access.redhat.com/security/cve/CVE-2019-13233

https://access.redhat.com/security/cve/CVE-2019-14821

https://access.redhat.com/security/cve/CVE-2019-15916

https://access.redhat.com/security/cve/CVE-2019-18660

https://access.redhat.com/security/cve/CVE-2020-12888

https://access.redhat.com/errata/RHSA-2020:2851

https://bugzilla.redhat.com/1660385

https://bugzilla.redhat.com/1701245

https://bugzilla.redhat.com/1703063

https://bugzilla.redhat.com/1716328

https://bugzilla.redhat.com/1727756

https://bugzilla.redhat.com/1746708

https://bugzilla.redhat.com/1750813

https://bugzilla.redhat.com/1777825

https://bugzilla.redhat.com/1836244

Plugin Details

Severity: High

ID: 138171

File Name: redhat-RHSA-2020-2851.nasl

Version: 1.6

Type: local

Agent: unix

Published: 7/7/2020

Updated: 10/12/2021

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

Risk Information

CVSS Score Source: CVE-2019-14821

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

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

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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

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

Vulnerability Information

CPE: cpe:/o:redhat:rhel_aus:7.6, cpe:/o:redhat:rhel_e4s:7.6, cpe:/o:redhat:rhel_eus:7.6, cpe:/o:redhat:rhel_tus:7.6, p-cpe:/a:redhat:enterprise_linux:bpftool, p-cpe:/a:redhat:enterprise_linux:kernel, p-cpe:/a:redhat:enterprise_linux:kernel-abi-whitelists, p-cpe:/a:redhat:enterprise_linux:kernel-bootwrapper, p-cpe:/a:redhat:enterprise_linux:kernel-debug, p-cpe:/a:redhat:enterprise_linux:kernel-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-devel, p-cpe:/a:redhat:enterprise_linux:kernel-headers, p-cpe:/a:redhat:enterprise_linux:kernel-kdump, p-cpe:/a:redhat:enterprise_linux:kernel-kdump-devel, p-cpe:/a:redhat:enterprise_linux:kernel-tools, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs-devel, p-cpe:/a:redhat:enterprise_linux:perf, p-cpe:/a:redhat:enterprise_linux:python-perf

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: 7/7/2020

Vulnerability Publication Date: 4/25/2016

Reference Information

CVE: CVE-2018-7191, CVE-2018-20169, CVE-2019-3901, CVE-2019-11487, CVE-2019-13233, CVE-2019-14821, CVE-2019-15916, CVE-2019-18660, CVE-2020-12888

BID: 89937, 108054, 108380, 109055

RHSA: 2020:2851

CWE: 200, 248, 362, 400, 416, 476, 667, 787