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Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-4711-1)

high Nessus Plugin ID 145511

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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 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4711-1 advisory.

 It was discovered that the LIO SCSI target implementation in the Linux kernel performed insufficient identifier checking in certain XCOPY requests. An attacker with access to at least one LUN in a multiple backstore environment could use this to expose sensitive information or modify data. (CVE-2020-28374)

 Kiyin () discovered that the perf subsystem in the Linux kernel did not properly deallocate memory in some situations. A privileged attacker could use this to cause a denial of service (kernel memory exhaustion). (CVE-2020-25704)

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-4711-1

Plugin Details

Severity: High

ID: 145511

File Name: ubuntu_USN-4711-1.nasl

Version: 1.7

Type: local

Agent: unix

Published: 1/28/2021

Updated: 8/28/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.1

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

CVSS Score Source: CVE-2020-28374

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1064-oracle, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1093-aws, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1092-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1095-snapdragon, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1078-gke, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1084-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1106-azure, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1078-raspi2

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

Exploit Ease: No known exploits are available

Patch Publication Date: 1/28/2021

Vulnerability Publication Date: 11/12/2020

Reference Information

CVE: CVE-2020-25704, CVE-2020-28374

USN: 4711-1