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Ubuntu 18.04 LTS : Linux kernel vulnerability (USN-4484-1)

high Nessus Plugin ID 140182

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 18.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-4484-1 advisory.

 - A flaw null pointer dereference in the Linux kernel cgroupv2 subsystem in versions before 5.7.10 was found in the way when reboot the system. A local user could use this flaw to crash the system or escalate their privileges on the system. (CVE-2020-14356)

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 kernel package.

See Also

https://ubuntu.com/security/notices/USN-4484-1

Plugin Details

Severity: High

ID: 140182

File Name: ubuntu_USN-4484-1.nasl

Version: 1.8

Type: local

Agent: unix

Published: 9/2/2020

Updated: 1/9/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

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-2020-14356

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:canonical:ubuntu_linux:linux-image-5.3.0-1032-raspi2, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3.0-1034-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3.0-1034-gke, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3.0-66-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3.0-66-lowlatency, cpe:/o:canonical:ubuntu_linux:18.04:-:lts

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/2/2020

Vulnerability Publication Date: 8/19/2020

Reference Information

CVE: CVE-2020-14356

USN: 4484-1