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Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-5813-1)

high Nessus Plugin ID 170185

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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 / 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5813-1 advisory.

 It was discovered that the NFSD implementation in the Linux kernel did not properly handle some RPC messages, leading to a buffer overflow. A remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-43945)

 Tams Koczka discovered that the Bluetooth L2CAP handshake implementation in the Linux kernel contained multiple use-after-free vulnerabilities. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-42896)

 It was discovered that the Xen netback driver in the Linux kernel did not properly handle packets structured in certain ways. An attacker in a guest VM could possibly use this to cause a denial of service (host NIC availability). (CVE-2022-3643)

 It was discovered that an integer overflow vulnerability existed in the Bluetooth subsystem in the Linux kernel. A physically proximate attacker could use this to cause a denial of service (system crash).
 (CVE-2022-45934)

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-5813-1

Plugin Details

Severity: High

ID: 170185

File Name: ubuntu_USN-5813-1.nasl

Version: 1.4

Type: local

Agent: unix

Published: 1/20/2023

Updated: 8/28/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 8.3

Temporal Score: 6.1

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

CVSS Score Source: CVE-2022-42896

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:A/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:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1062-gkeop, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-137-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1144-snapdragon, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-137-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1094-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-137-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1113-oracle, cpe:/o:canonical:ubuntu_linux:16.04:-:esm

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

Exploit Ease: No known exploits are available

Patch Publication Date: 1/19/2023

Vulnerability Publication Date: 11/4/2022

Reference Information

CVE: CVE-2022-3643, CVE-2022-42896, CVE-2022-43945, CVE-2022-45934

USN: 5813-1