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Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-5318-1)

high Nessus Plugin ID 158737

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Synopsis

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

Description

The remote Ubuntu 18.04 LTS / 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5318-1 advisory.

 - Non-transparent sharing of branch predictor selectors between contexts in some Intel(R) Processors may allow an authorized user to potentially enable information disclosure via local access. (CVE-2022-0001)

 - Non-transparent sharing of branch predictor within a context in some Intel(R) Processors may allow an authorized user to potentially enable information disclosure via local access. (CVE-2022-0002)

 - Certain Arm Cortex and Neoverse processors through 2022-03-08 do not properly restrict cache speculation, aka Spectre-BHB. An attacker can leverage the shared branch history in the Branch History Buffer (BHB) to influence mispredicted branches. Then, cache allocation can allow the attacker to obtain sensitive information. (CVE-2022-23960)

 - net/netfilter/nf_dup_netdev.c in the Linux kernel 5.4 through 5.6.10 allows local users to gain privileges because of a heap out-of-bounds write. This is related to nf_tables_offload. (CVE-2022-25636)

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-5318-1

Plugin Details

Severity: High

ID: 158737

File Name: ubuntu_USN-5318-1.nasl

Version: 1.9

Type: local

Agent: unix

Published: 3/9/2022

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: Critical

Score: 9.0

CVSS v2

Risk Factor: Medium

Base Score: 6.9

Temporal Score: 6

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

CVSS Score Source: CVE-2022-25636

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.5

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1017-ibm, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1030-bluefield, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1036-gkeop, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-104-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-104-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-104-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1055-raspi, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1058-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1065-gke, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1066-oracle, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1067-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1068-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1072-azure, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1072-azure-fde

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: 3/9/2022

Vulnerability Publication Date: 2/24/2022

Exploitable With

Core Impact

Reference Information

CVE: CVE-2022-0001, CVE-2022-0002, CVE-2022-23960, CVE-2022-25636

USN: 5318-1