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Ubuntu 18.04 LTS : Linux kernel (HWE) vulnerability (USN-4253-2)

medium Nessus Plugin ID 133350

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 18.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-4253-2 advisory.

 USN-4253-1 fixed vulnerabilities in the Linux kernel for Ubuntu 19.10. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 19.10 for Ubuntu 18.04 LTS.

 It was discovered that the Linux kernel did not properly clear data structures on context switches for certain Intel graphics processors. A local attacker could use this to expose sensitive information.

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-4253-2

Plugin Details

Severity: Medium

ID: 133350

File Name: ubuntu_USN-4253-2.nasl

Version: 1.10

Type: local

Agent: unix

Published: 1/30/2020

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: Medium

Score: 4.4

CVSS v2

Risk Factor: Low

Base Score: 1.9

Temporal Score: 1.5

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

CVSS Score Source: CVE-2019-14615

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 5

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3.0-28-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3.0-28-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3.0-28-lowlatency, cpe:/o:canonical:ubuntu_linux:18.04:-:lts

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: 1/28/2020

Vulnerability Publication Date: 1/17/2020

Reference Information

CVE: CVE-2019-14615

USN: 4253-2