CVE-2021-26327

CVSS V2 Low 2.1 CVSS V3 Medium 5.5

Description

Insufficient validation of guest context in the SNP Firmware could lead to a potential loss of guest confidentiality.

Overview

CVE ID
CVE-2021-26327

Assigner
psirt@amd.com

Vulnerability Status
Analyzed

Published Version
2021-11-16T19:15:07

Last Modified Date
2021-11-19T16:15:31

Weakness Enumerations

CWE	URL
CWE-668	http://cwe.mitre.org/data/definitions/668.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version End
		AND
cpe:2.3:o:amd:epyc_7003_firmware::::::::	1	OR	milanpi-sp3_1.0.0.4
cpe:2.3:h:amd:epyc_7003:-:::::::*	0	OR
		AND
cpe:2.3:o:amd:epyc_72f3_firmware::::::::	1	OR	milanpi-sp3_1.0.0.4
cpe:2.3:h:amd:epyc_72f3:-:::::::*	0	OR
		AND
cpe:2.3:o:amd:epyc_7313_firmware::::::::	1	OR	milanpi-sp3_1.0.0.4
cpe:2.3:h:amd:epyc_7313:-:::::::*	0	OR
		AND
cpe:2.3:o:amd:epyc_7313p_firmware::::::::	1	OR	milanpi-sp3_1.0.0.4
cpe:2.3:h:amd:epyc_7313p:-:::::::*	0	OR
		AND
cpe:2.3:o:amd:epyc_7343_firmware::::::::	1	OR	milanpi-sp3_1.0.0.4
cpe:2.3:h:amd:epyc_7343:-:::::::*	0	OR
		AND
cpe:2.3:o:amd:epyc_73f3_firmware::::::::	1	OR	milanpi-sp3_1.0.0.4
cpe:2.3:h:amd:epyc_73f3:-:::::::*	0	OR
		AND
cpe:2.3:o:amd:epyc_7413_firmware::::::::	1	OR	milanpi-sp3_1.0.0.4
cpe:2.3:h:amd:epyc_7413:-:::::::*	0	OR
		AND
cpe:2.3:o:amd:epyc_7443_firmware::::::::	1	OR	milanpi-sp3_1.0.0.4
cpe:2.3:h:amd:epyc_7443:-:::::::*	0	OR
		AND
cpe:2.3:o:amd:epyc_7443p_firmware::::::::	1	OR	milanpi-sp3_1.0.0.4
cpe:2.3:h:amd:epyc_7443p:-:::::::*	0	OR
		AND
cpe:2.3:o:amd:epyc_7453_firmware::::::::	1	OR	milanpi-sp3_1.0.0.4
cpe:2.3:h:amd:epyc_7453:-:::::::*	0	OR
		AND
cpe:2.3:o:amd:epyc_74f3_firmware::::::::	1	OR	milanpi-sp3_1.0.0.4
cpe:2.3:h:amd:epyc_74f3:-:::::::*	0	OR
		AND
cpe:2.3:o:amd:epyc_7513_firmware::::::::	1	OR	milanpi-sp3_1.0.0.4
cpe:2.3:h:amd:epyc_7513:-:::::::*	0	OR
		AND
cpe:2.3:o:amd:epyc_7543_firmware::::::::	1	OR	milanpi-sp3_1.0.0.4
cpe:2.3:h:amd:epyc_7543:-:::::::*	0	OR
		AND
cpe:2.3:o:amd:epyc_7543p_firmware::::::::	1	OR	milanpi-sp3_1.0.0.4
cpe:2.3:h:amd:epyc_7543p:-:::::::*	0	OR
		AND
cpe:2.3:o:amd:epyc_75f3_firmware::::::::	1	OR	milanpi-sp3_1.0.0.4
cpe:2.3:h:amd:epyc_75f3:-:::::::*	0	OR
		AND
cpe:2.3:o:amd:epyc_7643_firmware::::::::	1	OR	milanpi-sp3_1.0.0.4
cpe:2.3:h:amd:epyc_7643:-:::::::*	0	OR
		AND
cpe:2.3:o:amd:epyc_7663_firmware::::::::	1	OR	milanpi-sp3_1.0.0.4
cpe:2.3:h:amd:epyc_7663:-:::::::*	0	OR
		AND
cpe:2.3:o:amd:epyc_7713_firmware::::::::	1	OR	milanpi-sp3_1.0.0.4
cpe:2.3:h:amd:epyc_7713:-:::::::*	0	OR
		AND
cpe:2.3:o:amd:epyc_7713p_firmware::::::::	1	OR	milanpi-sp3_1.0.0.4
cpe:2.3:h:amd:epyc_7713p:-:::::::*	0	OR
		AND
cpe:2.3:o:amd:epyc_7763_firmware::::::::	1	OR	milanpi-sp3_1.0.0.4
cpe:2.3:h:amd:epyc_7763:-:::::::*	0	OR

CVSS Version 2

Version
2.0

Vector String
AV:L/AC:L/Au:N/C:P/I:N/A:N

Access Vector
LOCAL

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
PARTIAL

Integrity Impact
NONE

Availability Impact
NONE

Base Score
2.1

Severity
LOW

Exploitability Score
3.9

Impact Score
2.9

CVSS Version 3

Version
3.1

Vector String
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector
LOCAL

Attack Compatibility
LOW

Privileges Required
LOW

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
NONE

Base Score
5.5

Base Severity
MEDIUM

Exploitability Score
1.8

Impact Score
3.6

References

Reference URL	Reference Tags
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1021	Vendor Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-26327
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26327

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 06:45:37				Added to TrackCVE
2022-12-05 14:38:22	2021-11-16T19:15Z	2021-11-16T19:15:07	CVE Published Date	updated
2022-12-05 14:38:22		2021-11-19T16:15:31	CVE Modified Date	updated
2022-12-05 14:38:22		Analyzed	Vulnerability Status	updated