Detections
Analytics

Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-4681-1)

high Nessus Plugin ID 144752

Language:

Synopsis

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

Description

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4681-1 advisory.

 Ryan Hall discovered that the Intel 700 Series Ethernet Controllers driver in the Linux kernel did not properly deallocate memory in some conditions. A local attacker could use this to cause a denial of service (kernel memory exhaustion). (CVE-2019-0148)

 It was discovered that the console keyboard driver in the Linux kernel contained a race condition. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2020-25656)

 Minh Yuan discovered that the tty driver in the Linux kernel contained race conditions when handling fonts. A local attacker could possibly use this to expose sensitive information (kernel memory).
 (CVE-2020-25668)

 Jinoh Kang discovered that the Xen event channel infrastructure in the Linux kernel contained a race condition. An attacker in guest could possibly use this to cause a denial of service (dom0 crash).
 (CVE-2020-27675)

 Minh Yuan discovered that the framebuffer console driver in the Linux kernel did not properly handle fonts in some conditions. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2020-28974)

 It was discovered that Power 9 processors could be coerced to expose information from the L1 cache in certain situations. A local attacker could use this to expose sensitive information. (CVE-2020-4788)

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-4681-1

Plugin Details

Severity: High

ID: 144752

File Name: ubuntu_USN-4681-1.nasl

Version: 1.9

Type: local

Agent: unix

Published: 1/6/2021

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: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.9

Temporal Score: 5.4

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

CVSS Score Source: CVE-2020-25668

CVSS v3

Risk Factor: High

Base Score: 7

Temporal Score: 6.3

Vector: CVSS:3.0/AV:L/AC:H/PR:L/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-4.4.0-1143-raspi2, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-198-powerpc64-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-198-lowlatency, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1085-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-198-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-198-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-198-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-198-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1119-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1147-snapdragon, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-198-generic-lpae

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: 1/6/2021

Vulnerability Publication Date: 11/14/2019

Reference Information

CVE: CVE-2019-0148, CVE-2020-25656, CVE-2020-25668, CVE-2020-27675, CVE-2020-28974, CVE-2020-4788

USN: 4681-1