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Ubuntu 20.10 : Linux kernel vulnerabilities (USN-4626-1)

medium Nessus Plugin ID 142727

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Synopsis

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

Description

The remote Ubuntu 20.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4626-1 advisory.

 - An issue was discovered in the Linux kernel before 5.8.15. scalar32_min_max_or in kernel/bpf/verifier.c mishandles bounds tracking during use of 64-bit values, aka CID-5b9fbeb75b6a. (CVE-2020-27194)

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 packages.

See Also

https://ubuntu.com/security/notices/USN-4626-1

Plugin Details

Severity: Medium

ID: 142727

File Name: ubuntu_USN-4626-1.nasl

Version: 1.4

Type: local

Agent: unix

Published: 11/11/2020

Updated: 1/17/2023

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

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

CVSS Score Source: CVE-2020-8694

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-5.8.0-28-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.8.0-28-generic-64k, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.8.0-28-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.8.0-28-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-azure, p-cpe:/a:canonical:ubuntu_linux:linux-image-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-64k, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-64k-hwe-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-64k-hwe-20.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-hwe-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-hwe-20.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-lpae-hwe-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-lpae-hwe-20.04-edge, cpe:/o:canonical:ubuntu_linux:20.10, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.8.0-1007-raspi, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.8.0-1007-raspi-nolpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.8.0-1009-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.8.0-1010-oracle, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.8.0-1011-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.8.0-1012-azure, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.8.0-1013-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-gke, p-cpe:/a:canonical:ubuntu_linux:linux-image-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-lowlatency-hwe-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-lowlatency-hwe-20.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-oem-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-oracle, p-cpe:/a:canonical:ubuntu_linux:linux-image-raspi, p-cpe:/a:canonical:ubuntu_linux:linux-image-raspi-nolpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-virtual, p-cpe:/a:canonical:ubuntu_linux:linux-image-virtual-hwe-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-virtual-hwe-20.04-edge

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/11/2020

Vulnerability Publication Date: 10/16/2020

Reference Information

CVE: CVE-2020-27194, CVE-2020-8694

USN: 4626-1