Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2021-46778

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
10/08/2022
Last modified:
19/08/2022

Description

Execution unit scheduler contention may lead to a side channel vulnerability found on AMD CPU microarchitectures codenamed “Zen 1”, “Zen 2” and “Zen 3” that use simultaneous multithreading (SMT). By measuring the contention level on scheduler queues an attacker may potentially leak sensitive information.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 5.60 MEDIUM
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): High
Integrity (I): None
Availability (A): None

Base Score 3.x
5.60
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:amd:athlon_3050ge_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:amd:athlon_3050ge:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:athlon_3150g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:amd:athlon_3150g:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:athlon_3150ge_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:amd:athlon_3150ge:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7001_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:amd:epyc_7001:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7002_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:amd:epyc_7002:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7003_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:amd:epyc_7003:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7232p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:amd:epyc_7232p:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7251_firmware:-:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools