CVE-2022-28806

CVSS V2 High 7.2 CVSS V3 High 7.8

Description

An issue was discovered on certain Fujitsu LIEFBOOK devices (A3510, U9310, U7511/U7411/U7311, U9311, E5510/E5410, U7510/U7410/U7310, E459/E449) with BIOS versions before v1.09 (A3510), v2.17 (U9310), v2.30 (U7511/U7411/U7311), v2.33 (U9311), v2.23 (E5510), v2.19 (U7510/U7410), v2.13 (U7310), and v1.09 (E459/E449). The FjGabiFlashCoreAbstractionSmm driver registers a Software System Management Interrupt (SWSMI) handler that is not sufficiently validated to ensure that the CommBuffer (or any other communication buffer's nested contents) are not pointing to SMRAM contents. A potential attacker can therefore write fixed data to SMRAM, which could lead to data corruption inside this memory (e.g., change the SMI handler's code or modify SMRAM map structures to break input pointer validation for other SMI handlers). Thus, the attacker could elevate privileges from ring 0 to ring -2 and execute arbitrary code in SMM.

Overview

CVE ID
CVE-2022-28806

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2022-05-04T15:15:13

Last Modified Date
2022-05-18T13:26:13

Weakness Enumerations

CWE	URL
CWE-787	http://cwe.mitre.org/data/definitions/787.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version End
		AND
cpe:2.3:o:fujitsu:lifebook_a3510_firmware::::::::	1	OR	1.09
cpe:2.3:h:fujitsu:lifebook_a3510:-:::::::*	0	OR
		AND
cpe:2.3:o:fujitsu:lifebook_u9310_firmware::::::::	1	OR	2.17
cpe:2.3:h:fujitsu:lifebook_u9310:-:::::::*	0	OR
		AND
cpe:2.3:o:fujitsu:lifebook_u7511_firmware::::::::	1	OR	2.30
cpe:2.3:h:fujitsu:lifebook_u7511:-:::::::*	0	OR
		AND
cpe:2.3:o:fujitsu:lifebook_u7411_firmware::::::::	1	OR	2.30
cpe:2.3:h:fujitsu:lifebook_u7411:-:::::::*	0	OR
		AND
cpe:2.3:o:fujitsu:lifebook_u7311_firmware::::::::	1	OR	2.30
cpe:2.3:h:fujitsu:lifebook_u7311:-:::::::*	0	OR
		AND
cpe:2.3:o:fujitsu:lifebook_u9311_firmware::::::::	1	OR	2.33
cpe:2.3:h:fujitsu:lifebook_u9311:-:::::::*	0	OR
		AND
cpe:2.3:o:fujitsu:lifebook_e5510_firmware::::::::	1	OR	2.23
cpe:2.3:h:fujitsu:lifebook_e5510:-:::::::*	0	OR
		AND
cpe:2.3:o:fujitsu:lifebook_u7510_firmware::::::::	1	OR	2.19
cpe:2.3:h:fujitsu:lifebook_u7510:-:::::::*	0	OR
		AND
cpe:2.3:o:fujitsu:lifebook_u7410_firmware::::::::	1	OR	2.19
cpe:2.3:h:fujitsu:lifebook_u7410:-:::::::*	0	OR
		AND
cpe:2.3:o:fujitsu:lifebook_u7310_firmware::::::::	1	OR	2.13
cpe:2.3:h:fujitsu:lifebook_u7310:-:::::::*	0	OR
		AND
cpe:2.3:o:fujitsu:lifebook_e459_firmware::::::::	1	OR	1.09
cpe:2.3:h:fujitsu:lifebook_e459:-:::::::*	0	OR
		AND
cpe:2.3:o:fujitsu:lifebook_e449_firmware::::::::	1	OR	1.09
cpe:2.3:h:fujitsu:lifebook_e449:-:::::::*	0	OR

CVSS Version 2

Version
2.0

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

Access Vector
LOCAL

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
COMPLETE

Integrity Impact
COMPLETE

Availability Impact
COMPLETE

Base Score
7.2

Severity
HIGH

Exploitability Score
3.9

Impact Score
10

CVSS Version 3

Version
3.1

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

Attack Vector
LOCAL

Attack Compatibility
LOW

Privileges Required
LOW

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
7.8

Base Severity
HIGH

Exploitability Score
1.8

Impact Score
5.9

References

Reference URL	Reference Tags
https://www.binarly.io/advisories
https://support.ts.fujitsu.com/ProductSecurity/content/Fujitsu-PSIRT-FCCL-IS-2021-090903-Security-Advisory.asp
http://www.fmworld.net/biz/common/insyde/20220210/
https://kb.cert.org/vuls/id/796611

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2022-28806
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-28806

History

Created	Old Value	New Value	Data Type	Notes
2022-05-08 06:19:17				Added to TrackCVE