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Ubuntu 16.04 ESM : Linux kernel vulnerabilities (USN-5465-1)

high Nessus Plugin ID 161957

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Synopsis

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

Description

The remote Ubuntu 16.04 ESM host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5465-1 advisory.

 It was discovered that the Linux kernel did not properly restrict access to the kernel debugger when booted in secure boot environments. A privileged attacker could use this to bypass UEFI Secure Boot restrictions. (CVE-2022-21499)

 Aaron Adams discovered that the netfilter subsystem in the Linux kernel did not properly handle the removal of stateful expressions in some situations, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or execute arbitrary code.
 (CVE-2022-1966)

 Jann Horn discovered that the Linux kernel did not properly enforce seccomp restrictions in some situations. A local attacker could use this to bypass intended seccomp sandbox restrictions.
 (CVE-2022-30594)

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-5465-1

Plugin Details

Severity: High

ID: 161957

File Name: ubuntu_USN-5465-1.nasl

Version: 1.10

Type: local

Agent: unix

Published: 6/8/2022

Updated: 8/29/2024

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: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.6

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

CVSS Score Source: CVE-2022-21499

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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:P/RL:O/RC:C

CVSS Score Source: CVE-2022-30594

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1108-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1143-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-227-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-227-lowlatency, cpe:/o:canonical:ubuntu_linux:16.04:-:esm

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/8/2022

Vulnerability Publication Date: 5/12/2022

Reference Information

CVE: CVE-2022-21499, CVE-2022-30594

USN: 5465-1