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Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-4877-1)

medium Nessus Plugin ID 147992

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Synopsis

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

Description

The remote Ubuntu 16.04 LTS / 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4877-1 advisory.

 It was discovered that the Marvell WiFi-Ex device driver in the Linux kernel did not properly validate ad- hoc SSIDs. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-36158)

 discovered that the NFS implementation in the Linux kernel did not properly prevent access outside of an NFS export that is a subdirectory of a file system. An attacker could possibly use this to bypass NFS access restrictions. (CVE-2021-3178)

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-4877-1

Plugin Details

Severity: Medium

ID: 147992

File Name: ubuntu_USN-4877-1.nasl

Version: 1.6

Type: local

Agent: unix

Published: 3/23/2021

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: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2020-36158

CVSS v3

Risk Factor: Medium

Base Score: 6.7

Temporal Score: 5.8

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1109-azure, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-137-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1080-raspi2, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1097-snapdragon, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-137-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1095-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-137-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1066-oracle, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1094-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1086-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1013-dell300x

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

Exploit Ease: No known exploits are available

Patch Publication Date: 3/16/2021

Vulnerability Publication Date: 1/5/2021

Reference Information

CVE: CVE-2020-36158, CVE-2021-3178

USN: 4877-1