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Ubuntu 18.04 LTS : Linux kernel vulnerability (USN-3652-1)

medium Nessus Plugin ID 110045

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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-3652-1 advisory.

 Jann Horn and Ken Johnson discovered that microprocessors utilizing speculative execution of a memory read may allow unauthorized memory reads via a sidechannel attack. This flaw is known as Spectre Variant 4. A local attacker could use this to expose sensitive information, including kernel memory.

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-3652-1

Plugin Details

Severity: Medium

ID: 110045

File Name: ubuntu_USN-3652-1.nasl

Version: 1.17

Type: local

Agent: unix

Published: 5/23/2018

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: Low

Base Score: 2.1

Temporal Score: 1.6

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

CVSS Score Source: CVE-2018-3639

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/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-4.15.0-1006-oem, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-22-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1010-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-22-snapdragon, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1008-gcp, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1012-azure, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-22-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1009-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-22-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: 5/22/2018

Vulnerability Publication Date: 5/22/2018

Reference Information

CVE: CVE-2018-3639

USN: 3652-1