Red Hat Enterprise Linux 7.4 update for microcode_ctl

1) Security restrictions bypass

EUVDB-ID: #VU48630

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-8696

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to improper removal of sensitive information before storage or transfer in some Intel(R) Processors. A local user can gain access to sensitive information on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

microcode_ctl (Red Hat package): 2.1-22.26.el7_4 - 2.1-22.36.el7_4

Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions: 7.4

Red Hat Enterprise Linux Server - TUS: 7.4

Red Hat Enterprise Linux Server - AUS: 7.4

External links

http://access.redhat.com/errata/RHBA-2021:0628

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.