RHEL 8 : microcode_ctl (RHSA-2020:2677)
medium Nessus Plugin ID 137749
Language:
New! Plugin Severity Now Using CVSS v3
The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.
Synopsis
The remote Red Hat host is missing one or more security updates.Description
The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2020:2677 advisory.- hw: Special Register Buffer Data Sampling (SRBDS) (CVE-2020-0543)
- hw: Vector Register Data Sampling (CVE-2020-0548)
- hw: L1D Cache Eviction Sampling (CVE-2020-0549)
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://cwe.mitre.org/data/definitions/200.html
https://cwe.mitre.org/data/definitions/203.html
https://access.redhat.com/security/cve/CVE-2020-0543
https://access.redhat.com/security/cve/CVE-2020-0548
https://access.redhat.com/security/cve/CVE-2020-0549
https://access.redhat.com/errata/RHSA-2020:2677
https://bugzilla.redhat.com/1788786
Plugin Details
Severity: Medium
ID: 137749
File Name: redhat-RHSA-2020-2677.nasl
Version: 1.5
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 6/23/2020
Updated: 7/21/2021
Dependencies: ssh_get_info.nasl, redhat_repos.nasl
Risk Information
CVSS Score Source: CVE-2020-0549
VPR
Risk Factor: Medium
Score: 6.7
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 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:redhat:rhel_e4s:8.1, cpe:/o:redhat:rhel_eus:8.1, p-cpe:/a:redhat:enterprise_linux:microcode_ctl
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Ease: No known exploits are available
Patch Publication Date: 6/23/2020
Vulnerability Publication Date: 1/28/2020