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Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel update (USN-4689-4)

high Nessus Plugin ID 145234

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Synopsis

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

Description

The remote Ubuntu 18.04 LTS / 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4689-4 advisory.

 USN-4689-3 fixed vulnerabilities in the NVIDIA server graphics drivers. This update provides the corresponding updates for the NVIDIA Linux DKMS kernel modules.

 Original advisory details:

 It was discovered that the NVIDIA GPU display driver for the Linux kernel

 contained a vulnerability that allowed user-mode clients to access legacy

 privileged APIs. A local attacker could use this to cause a denial of

 service or escalate privileges. (CVE-2021-1052)

 It was discovered that the NVIDIA GPU display driver for the Linux kernel

 did not properly validate a pointer received from userspace in some

 situations. A local attacker could use this to cause a denial of service.

 (CVE-2021-1053)

 Xinyuan Lyu discovered that the NVIDIA GPU display driver for the Linux

 kernel did not properly restrict device-level GPU isolation. A local

 attacker could use this to cause a denial of service or possibly expose

 sensitive information. (CVE-2021-1056)

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-4689-4

Plugin Details

Severity: High

ID: 145234

File Name: ubuntu_USN-4689-4.nasl

Version: 1.7

Type: local

Agent: unix

Published: 1/21/2021

Updated: 8/27/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

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-2021-1052

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-5.8.0-40-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-134-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-64-generic, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.8.0-40-lowlatency, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-134-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.8.0-40-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-64-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-134-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-64-lowlatency

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

Exploit Ease: No known exploits are available

Patch Publication Date: 1/21/2021

Vulnerability Publication Date: 1/8/2021

Reference Information

CVE: CVE-2021-1052, CVE-2021-1053

USN: 4689-4