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Ubuntu 18.04 LTS : Linux kernel vulnerability (USN-5591-3)

medium Nessus Plugin ID 164587

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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-5591-3 advisory.

 - When setting font with malicous data by ioctl cmd PIO_FONT,kernel will write memory out of bounds.
 (CVE-2021-33656)

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-5591-3

Plugin Details

Severity: Medium

ID: 164587

File Name: ubuntu_USN-5591-3.nasl

Version: 1.7

Type: local

Agent: unix

Published: 9/1/2022

Updated: 1/9/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2021-33656

CVSS v3

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1052-dell300x, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1126-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1135-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1136-snapdragon, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1150-azure, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-192-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-192-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-192-lowlatency

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/1/2022

Vulnerability Publication Date: 7/18/2022

Reference Information

CVE: CVE-2021-33656

USN: 5591-3