Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2021-20872

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
04/01/2022
Last modified:
13/01/2022

Description

Protection mechanism failure vulnerability in KONICA MINOLTA bizhub series (bizhub C750i G00-35 and earlier, bizhub C650i/C550i/C450i G00-B6 and earlier, bizhub C360i/C300i/C250i G00-B6 and earlier, bizhub 750i/650i/550i/450i G00-37 and earlier, bizhub 360i/300i G00-33 and earlier, bizhub C287i/C257i/C227i G00-19 and earlier, bizhub 306i/266i/246i/226i G00-B6 and earlier, bizhub C759/C659 GC7-X8 and earlier, bizhub C658/C558/C458 GC7-X8 and earlier, bizhub 958/808/758 GC7-X8 and earlier, bizhub 658e/558e/458e GC7-X8 and earlier, bizhub C287/C227 GC7-X8 and earlier, bizhub 287/227 GC7-X8 and earlier, bizhub 368e/308e GC7-X8 and earlier, bizhub C368/C308/C258 GC9-X4 and earlier, bizhub 558/458/368/308 GC9-X4 and earlier, bizhub C754e/C654e GDQ-M0 and earlier, bizhub 754e/654e GDQ-M0 and earlier, bizhub C554e/C454e GDQ-M1 and earlier, bizhub C364e/C284e/C224e GDQ-M1 and earlier, bizhub 554e/454e/364e/284e/224e GDQ-M1 and earlier, bizhub C754/C654 C554/C454 GR1-M0 and earlier, bizhub C364/C284/C224 GR1-M0 and earlier, bizhub 754/654 GR1-M0 and earlier, bizhub C3851FS/C3851/C3351 GC9-X4 and earlier, bizhub 4752/4052 GC9-X4 and earlier) allows a physical attacker to bypass the firmware integrity verification and to install malicious firmware.

Impact

Vector 3.x
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.80 MEDIUM
Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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

Base Score 3.x
6.80
Severity 3.x
MEDIUM
Vector 2.0
AV:L/AC:L/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 4.60 MEDIUM
Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P

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

Base Score 2.0
4.60
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:konicaminolta:bizhub_c759_firmware:*:*:*:*:*:*:*:* gca-y1 (excluding)
cpe:2.3:h:konicaminolta:bizhub_c759:-:*:*:*:*:*:*:*
cpe:2.3:o:konicaminolta:bizhub_c659_firmware:*:*:*:*:*:*:*:* gca-y1 (excluding)
cpe:2.3:h:konicaminolta:bizhub_c659:-:*:*:*:*:*:*:*
cpe:2.3:o:konicaminolta:bizhub_c658_firmware:*:*:*:*:*:*:*:* gca-y1 (excluding)
cpe:2.3:h:konicaminolta:bizhub_c658:-:*:*:*:*:*:*:*
cpe:2.3:o:konicaminolta:bizhub_c558_firmware:*:*:*:*:*:*:*:* gca-y1 (excluding)
cpe:2.3:h:konicaminolta:bizhub_c558:-:*:*:*:*:*:*:*
cpe:2.3:o:konicaminolta:bizhub_c458_firmware:*:*:*:*:*:*:*:* gca-y1 (excluding)
cpe:2.3:h:konicaminolta:bizhub_c458:-:*:*:*:*:*:*:*
cpe:2.3:o:konicaminolta:bizhub_958_firmware:*:*:*:*:*:*:*:* gca-y1 (excluding)
cpe:2.3:h:konicaminolta:bizhub_958:-:*:*:*:*:*:*:*
cpe:2.3:o:konicaminolta:bizhub_808_firmware:*:*:*:*:*:*:*:* gca-y1 (excluding)
cpe:2.3:h:konicaminolta:bizhub_808:-:*:*:*:*:*:*:*
cpe:2.3:o:konicaminolta:bizhub_758_firmware:*:*:*:*:*:*:*:* gca-y1 (excluding)

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


References to Advisories, Solutions, and Tools