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Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-4591-1)

high Nessus Plugin ID 141541

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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 / 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4591-1 advisory.

 Andy Nguyen discovered that the Bluetooth L2CAP implementation in the Linux kernel contained a type- confusion error. A physically proximate remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-12351)

 Andy Nguyen discovered that the Bluetooth A2MP implementation in the Linux kernel did not properly initialize memory in some situations. A physically proximate remote attacker could use this to expose sensitive information (kernel memory). (CVE-2020-12352)

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-4591-1

Plugin Details

Severity: High

ID: 141541

File Name: ubuntu_USN-4591-1.nasl

Version: 1.8

Type: local

Agent: unix

Published: 10/20/2020

Updated: 8/27/2024

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

Risk Information

VPR

Risk Factor: High

Score: 8.4

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.5

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

CVSS Score Source: CVE-2020-12351

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.9

Vector: CVSS:3.0/AV:A/AC:L/PR:N/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-4.15.0-122-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-122-lowlatency, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-122-generic-lpae, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-52-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1100-oem, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-52-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1022-raspi, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-52-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1090-snapdragon

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: 10/19/2020

Vulnerability Publication Date: 10/19/2020

Reference Information

CVE: CVE-2020-12351, CVE-2020-12352

USN: 4591-1