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Ubuntu 18.04 LTS : Linux kernel vulnerabilities (USN-4319-1)

high Nessus Plugin ID 135270

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4319-1 advisory.

 It was discovered that the IPMI message handler implementation in the Linux kernel did not properly deallocate memory in certain situations. A local attacker could use this to cause a denial of service (kernel memory exhaustion). (CVE-2019-19046)

 Al Viro discovered that the vfs layer in the Linux kernel contained a use- after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2020-8428)

Tenable has extracted the preceding description block directly from the Ubuntu 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 affected kernel package.

See Also

https://ubuntu.com/security/notices/USN-4319-1

Plugin Details

Severity: High

ID: 135270

File Name: ubuntu_USN-4319-1.nasl

Version: 1.8

Type: local

Agent: unix

Published: 4/7/2020

Updated: 8/27/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: Low

Base Score: 3.6

Temporal Score: 2.7

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

CVSS Score Source: CVE-2020-8428

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3.0-1022-raspi2, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3.0-46-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3.0-1014-oracle, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3.0-1019-azure, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3.0-46-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3.0-1017-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3.0-46-generic-lpae

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

Exploit Ease: No known exploits are available

Patch Publication Date: 4/10/2020

Vulnerability Publication Date: 11/18/2019

Reference Information

CVE: CVE-2019-19046, CVE-2020-8428

USN: 4319-1