CVE-2018-1992

CVSS V2 Medium 6.9 CVSS V3 Medium 6.4

Description

The IBM Power 9 OP910, OP920, and FW910 boot firmware's bootloader is responsible for loading and validating the initial boot firmware image that drives the rest of the system's hardware initialization. The bootloader firmware contains a buffer overflow vulnerability such that, if an attacker were able to replace the initial boot firmware image with a very carefully crafted and sufficiently large, malicious replacement, it could cause the bootloader, during the load of that image, to overwrite its own instruction memory and circumvent secure boot protections, install trojans, etc. IBM X-Force ID: 154345.

Overview

CVE ID
CVE-2018-1992

Assigner
psirt@us.ibm.com

Vulnerability Status
Modified

Published Version
2019-03-21T16:00:33

Last Modified Date
2019-10-09T23:39:29

Weakness Enumerations

CWE	URL
CWE-119	http://cwe.mitre.org/data/definitions/119.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version End
		AND
cpe:2.3:o:ibm:power_system_s922_\(9009-22a\)_firmware::::::::	1	OR	fw910.10
cpe:2.3:h:ibm:power_system_s922_\(9009-22a\):-:::::::*	0	OR
		AND
cpe:2.3:o:ibm:power_system_h922_\(9223-22h\)_firmware::::::::	1	OR	fw910.10
cpe:2.3:h:ibm:power_system_h922_\(9223-22h\):-:::::::*	0	OR
		AND
cpe:2.3:o:ibm:power_system_s914_\(9009-41a\)_firmware::::::::	1	OR	fw910.10
cpe:2.3:h:ibm:power_system_s914_\(9009-41a\):-:::::::*	0	OR
		AND
cpe:2.3:o:ibm:power_system_s924_\(9009-42a\)_firmware::::::::	1	OR	fw910.10
cpe:2.3:h:ibm:power_system_s924_\(9009-42a\):-:::::::*	0	OR
		AND
cpe:2.3:o:ibm:power_system_h924_\(9223-42h\)_firmware::::::::	1	OR	fw910.10
cpe:2.3:h:ibm:power_system_h924_\(9223-42h\):-:::::::*	0	OR
		AND
cpe:2.3:o:ibm:power_system_l922_\(9008-22l\)_firmware::::::::	1	OR	fw910.10
cpe:2.3:h:ibm:power_system_l922_\(9008-22l\):-:::::::*	0	OR
		AND
cpe:2.3:o:ibm:power_system_ac922_\(8335-gtg\)_firmware::::::::	1	OR	op910.30
cpe:2.3:h:ibm:power_system_ac922_\(8335-gtg\):-:::::::*	0	OR
		AND
cpe:2.3:o:ibm:power_system_ac922_\(8335-gth\)_firmware::::::::	1	OR	op920.10
cpe:2.3:h:ibm:power_system_ac922_\(8335-gth\):-:::::::*	0	OR
		AND
cpe:2.3:o:ibm:power_system_ac922_\(8335-gtx\)_firmware::::::::	1	OR	op920.10
cpe:2.3:h:ibm:power_system_ac922_\(8335-gtx\):-:::::::*	0	OR
		AND
cpe:2.3:o:ibm:power_system_lc921_\(9006-12p\)_firmware::::::::	1	OR	op920.10
cpe:2.3:h:ibm:power_system_lc921_\(9006-12p\):-:::::::*	0	OR
		AND
cpe:2.3:o:ibm:power_system_lc922_\(9006-22p\)_firmware::::::::	1	OR	op920.10
cpe:2.3:h:ibm:power_system_lc922_\(9006-22p\):-:::::::*	0	OR

CVSS Version 2

Version
2.0

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

Access Vector
LOCAL

Access Compatibility
MEDIUM

Authentication
NONE

Confidentiality Impact
COMPLETE

Integrity Impact
COMPLETE

Availability Impact
COMPLETE

Base Score
6.9

Severity
MEDIUM

Exploitability Score
3.4

Impact Score
10

CVSS Version 3

Version
3.0

Vector String
CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL

Attack Compatibility
HIGH

Privileges Required
HIGH

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
6.4

Base Severity
MEDIUM

Exploitability Score
0.5

Impact Score
5.9

References

Reference URL	Reference Tags
https://www.ibm.com/support/docview.wss?uid=ibm10868992	Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/154345	VDB Entry Vendor Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2018-1992
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1992

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 17:04:16				Added to TrackCVE
2022-12-03 18:22:03	2019-03-21T16:00Z	2019-03-21T16:00:33	CVE Published Date	updated
2022-12-03 18:22:03		2019-10-09T23:39:29	CVE Modified Date	updated
2022-12-03 18:22:03		Modified	Vulnerability Status	updated