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Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS : Intel Microcode vulnerability (USN-5612-1)

medium Nessus Plugin ID 165109

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-5612-1 advisory.

 Pietro Borrello, Andreas Kogler, Martin Schwarzl, Daniel Gruss, Michael Schwarz and Moritz Lipp discovered that some Intel processors did not properly clear data between subsequent xAPIC MMIO reads. This could allow a local attacker to compromise SGX enclaves.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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 intel-microcode package.

See Also

https://ubuntu.com/security/notices/USN-5612-1

Plugin Details

Severity: Medium

ID: 165109

File Name: ubuntu_USN-5612-1.nasl

Version: 1.6

Type: local

Agent: unix

Published: 9/15/2022

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: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2022-21233

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: cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:intel-microcode, cpe:/o:canonical:ubuntu_linux:22.04:-:lts

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/15/2022

Vulnerability Publication Date: 8/18/2022

Reference Information

CVE: CVE-2022-21233

USN: 5612-1