Detections
Analytics

Ubuntu 20.04 LTS : Linux kernel vulnerability (USN-5135-1)

medium Nessus Plugin ID 154974

Language:

Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 20.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-5135-1 advisory.

 - A memory overflow vulnerability was found in the Linux kernel's ipc functionality of the memcg subsystem, in the way a user calls the semget function multiple times, creating semaphores. This flaw allows a local user to starve the resources, causing a denial of service. The highest threat from this vulnerability is to system availability. (CVE-2021-3759)

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-5135-1

Plugin Details

Severity: Medium

ID: 154974

File Name: ubuntu_USN-5135-1.nasl

Version: 1.8

Type: local

Agent: unix

Published: 11/9/2021

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: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.6

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

CVSS Score Source: CVE-2021-3759

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:N/I:N/A:H

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.11.0-1021-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.11.0-1022-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.11.0-40-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.11.0-40-generic-64k, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.11.0-40-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.11.0-40-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.13.0-1019-oem

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: 11/9/2021

Vulnerability Publication Date: 2/11/2022

Reference Information

CVE: CVE-2021-3759

USN: 5135-1