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Ubuntu 16.04 LTS : Linux kernel vulnerability (USN-4320-1)

high Nessus Plugin ID 135271

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 16.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-4320-1 advisory.

 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).

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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-4320-1

Plugin Details

Severity: High

ID: 135271

File Name: ubuntu_USN-4320-1.nasl

Version: 1.7

Type: local

Agent: unix

Published: 4/7/2020

Updated: 8/29/2024

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: p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1069-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-177-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-177-generic, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-177-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-177-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-177-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1105-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1131-raspi2, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-177-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-177-powerpc64-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1135-snapdragon

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

Exploit Ease: No known exploits are available

Patch Publication Date: 4/6/2020

Vulnerability Publication Date: 1/29/2020

Reference Information

CVE: CVE-2020-8428

USN: 4320-1