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Ubuntu 16.04 ESM / 18.04 LTS : Linux kernel vulnerabilities (USN-5621-1)

medium Nessus Plugin ID 165286

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 16.04 ESM / 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5621-1 advisory.

 It was discovered that the framebuffer driver on the Linux kernel did not verify size limits when changing font or screen size, leading to an out-of- bounds write. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-33655)

 Domingo Dirutigliano and Nicola Guerrera discovered that the netfilter subsystem in the Linux kernel did not properly handle rules that truncated packets below the packet header size. When such rules are in place, a remote attacker could possibly use this to cause a denial of service (system crash).
 (CVE-2022-36946)

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-5621-1

Plugin Details

Severity: Medium

ID: 165286

File Name: ubuntu_USN-5621-1.nasl

Version: 1.7

Type: local

Agent: unix

Published: 9/21/2022

Updated: 8/27/2024

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: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 4.8

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

CVSS Score Source: CVE-2021-33655

CVSS v3

Risk Factor: Medium

Base Score: 6.7

Temporal Score: 5.8

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1106-oracle, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1119-raspi2, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1136-gcp, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1141-aws-hwe, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1151-azure, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1141-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-193-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1127-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-193-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-193-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1137-snapdragon, cpe:/o:canonical:ubuntu_linux:16.04:-:esm, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1053-dell300x

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/21/2022

Vulnerability Publication Date: 7/18/2022

Reference Information

CVE: CVE-2021-33655, CVE-2022-36946

USN: 5621-1