Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2018-1992

Severity CVSS v4.0:
Pending analysis
Type:
CWE-119 Buffer Errors
Publication date:
21/03/2019
Last modified:
09/10/2019

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.

Impact

Vector 3.x
CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.40 MEDIUM
Vector: CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

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

Base Score 3.x
6.40
Severity 3.x
MEDIUM
Vector 2.0
AV:L/AC:M/Au:N/C:C/I:C/A:C CVSS v2.0 Severity and Metrics:

Base Score: 6.90 MEDIUM
Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C

Attack Vector (AV): Local
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete

Base Score 2.0
6.90
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:ibm:power_system_s922_\(9009-22a\)_firmware:*:*:*:*:*:*:*:* fw910.10 (excluding)
cpe:2.3:h:ibm:power_system_s922_\(9009-22a\):-:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_h922_\(9223-22h\)_firmware:*:*:*:*:*:*:*:* fw910.10 (excluding)
cpe:2.3:h:ibm:power_system_h922_\(9223-22h\):-:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_s914_\(9009-41a\)_firmware:*:*:*:*:*:*:*:* fw910.10 (excluding)
cpe:2.3:h:ibm:power_system_s914_\(9009-41a\):-:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_s924_\(9009-42a\)_firmware:*:*:*:*:*:*:*:* fw910.10 (excluding)
cpe:2.3:h:ibm:power_system_s924_\(9009-42a\):-:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_h924_\(9223-42h\)_firmware:*:*:*:*:*:*:*:* fw910.10 (excluding)
cpe:2.3:h:ibm:power_system_h924_\(9223-42h\):-:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_l922_\(9008-22l\)_firmware:*:*:*:*:*:*:*:* fw910.10 (excluding)
cpe:2.3:h:ibm:power_system_l922_\(9008-22l\):-:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_ac922_\(8335-gtg\)_firmware:*:*:*:*:*:*:*:* op910.30 (excluding)
cpe:2.3:h:ibm:power_system_ac922_\(8335-gtg\):-:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_ac922_\(8335-gth\)_firmware:*:*:*:*:*:*:*:* op920.10 (excluding)

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


References to Advisories, Solutions, and Tools