Oracle Linux 7 : microcode_ctl (ELSA-2020-5083)

medium Nessus Plugin ID 142964

Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

The remote Oracle Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2020-5083 advisory.

- Observable discrepancy in the RAPL interface for some Intel(R) Processors may allow a privileged user to potentially enable information disclosure via local access. (CVE-2020-8695)

- Improper removal of sensitive information before storage or transfer in some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access. (CVE-2020-8696)

- Improper isolation of shared resources in some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access. (CVE-2020-8698)

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 microcode_ctl package.

See Also

https://linux.oracle.com/errata/ELSA-2020-5083.html

Plugin Details

Severity: Medium

ID: 142964

File Name: oraclelinux_ELSA-2020-5083.nasl

Version: 1.4

Type: local

Agent: unix

Published: 11/17/2020

Updated: 12/1/2020

Supported Sensors: Frictionless Assessment Agent, Nessus Agent

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS Score Source: CVE-2020-8698

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: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:oracle:linux:7, p-cpe:/a:oracle:linux:microcode_ctl

Required KB Items: Host/OracleLinux, Host/RedHat/release, Host/RedHat/rpm-list, Host/local_checks_enabled

Exploit Ease: No known exploits are available

Patch Publication Date: 11/17/2020

Vulnerability Publication Date: 11/11/2020

Reference Information

CVE: CVE-2020-8695, CVE-2020-8696, CVE-2020-8698