Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2021-20487

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
26/05/2021
Last modified:
14/06/2021

Description

IBM Power9 Self Boot Engine(SBE) could allow a privileged user to inject malicious code and compromise the integrity of the host firmware bypassing the host firmware signature verification process.

Impact

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

Base Score: 9.10 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

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

Base Score 3.x
9.10
Severity 3.x
CRITICAL
Vector 2.0
AV:N/AC:L/Au:S/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 6.50 MEDIUM
Vector: AV:N/AC:L/Au:S/C:P/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): Single
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0
6.50
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:ibm:power9_system_firmware:*:*:*:*:*:*:*:* fw930.00 (including) fw930.30 (excluding)
cpe:2.3:o:ibm:power9_system_firmware:*:*:*:*:*:*:*:* fw940.00 (including) fw940.20 (excluding)
cpe:2.3:h:ibm:9008-22l:-:*:*:*:*:*:*:*
cpe:2.3:h:ibm:9009-22a:-:*:*:*:*:*:*:*
cpe:2.3:h:ibm:9009-41a:-:*:*:*:*:*:*:*
cpe:2.3:h:ibm:9009-42a:-:*:*:*:*:*:*:*
cpe:2.3:h:ibm:9040-mr9:-:*:*:*:*:*:*:*
cpe:2.3:h:ibm:9080-m9s:-:*:*:*:*:*:*:*
cpe:2.3:h:ibm:9223-22h:-:*:*:*:*:*:*:*
cpe:2.3:h:ibm:9223-42h:-:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power9_system_firmware:*:*:*:*:*:*:*:* fw950.00 (excluding)
cpe:2.3:h:ibm:9009-22g:-:*:*:*:*:*:*:*
cpe:2.3:h:ibm:9009-41g:-:*:*:*:*:*:*:*
cpe:2.3:h:ibm:9009-42g:-:*:*:*:*:*:*:*
cpe:2.3:h:ibm:9223-22s:-:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools