Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerability (USN-4710-1)

medium Nessus Plugin ID 145518

Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 16.04 LTS / 18.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-4710-1 advisory.

- A flaw memory leak in the Linux kernel performance monitoring subsystem was found in the way if using PERF_EVENT_IOC_SET_FILTER. A local user could use this flaw to starve the resources causing denial of service. (CVE-2020-25704)

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-4710-1

Plugin Details

Severity: Medium

ID: 145518

File Name: ubuntu_USN-4710-1.nasl

Version: 1.6

Type: local

Agent: unix

Published: 1/28/2021

Updated: 1/9/2024

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 3.6

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

CVSS Score Source: CVE-2020-25704

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-133-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-133-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-133-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-135-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-135-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-135-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: 1/28/2021

Vulnerability Publication Date: 11/12/2020

Reference Information

CVE: CVE-2020-25704

USN: 4710-1