CVE-2021-20487
CVSS V2 Medium 6.5
CVSS V3 Critical 9.1
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.
Overview
- CVE ID
- CVE-2021-20487
- Assigner
- psirt@us.ibm.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-05-26T17:15:14
- Last Modified Date
- 2021-06-14T15:11:41
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| AND | ||||
| cpe:2.3:o:ibm:power9_system_firmware:*:*:*:*:*:*:*:* | 1 | OR | fw930.00 | fw930.30 |
| cpe:2.3:o:ibm:power9_system_firmware:*:*:*:*:*:*:*:* | 1 | OR | fw940.00 | fw940.20 |
| cpe:2.3:h:ibm:9008-22l:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:ibm:9009-22a:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:ibm:9009-41a:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:ibm:9009-42a:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:ibm:9040-mr9:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:ibm:9080-m9s:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:ibm:9223-22h:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:ibm:9223-42h:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:ibm:power9_system_firmware:*:*:*:*:*:*:*:* | 1 | OR | fw950.00 | |
| cpe:2.3:h:ibm:9009-22g:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:ibm:9009-41g:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:ibm:9009-42g:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:ibm:9223-22s:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:ibm:9223-42s:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:ibm:scale-out_lc_system_firmware:*:*:*:*:*:*:*:* | 1 | OR | op940.20 | |
| cpe:2.3:h:ibm:8335-gth:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:ibm:8335-gtx:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:ibm:9183-22x:-:*:*:*:*:*:*:* | 0 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:S/C:P/I:P/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- SINGLE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 6.5
- Severity
- MEDIUM
- Exploitability Score
- 8
- Impact Score
- 6.4
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- HIGH
- User Interaction
- NONE
- Scope
- CHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 9.1
- Base Severity
- CRITICAL
- Exploitability Score
- 2.3
- Impact Score
- 6
References
| Reference URL | Reference Tags |
|---|---|
| https://www.ibm.com/support/pages/node/6455911 | Vendor Advisory |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/197730 | VDB Entry Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-20487 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20487 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:11:50 | Added to TrackCVE | |||
| 2022-12-05 03:01:37 | 2021-05-26T17:15Z | 2021-05-26T17:15:14 | CVE Published Date | updated |
| 2022-12-05 03:01:37 | 2021-06-14T15:11:41 | CVE Modified Date | updated | |
| 2022-12-05 03:01:37 | Analyzed | Vulnerability Status | updated |