CVE-2021-23842

Communication to the AMC2 uses a state-of-the-art cryptographic algorithm for symmetric encryption called Blowfish. An attacker could retrieve the key from the firmware to decrypt network traffic between the AMC2 and the host system. Thus, an attacker can exploit this vulnerability to decrypt and modify network traffic, decrypt and further investigate the device\'s firmware file, and change the device configuration. The attacker needs to have access to the local network, typically even the same subnet.

CVSS v3 5.7 MEDIUM
CVSS v2.0 3.6 LOW

5.7^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.1 / Impact : 3.6

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

3.6^/10

CVSS v2.0 : LOW

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

Exploitability : 3.9 / Impact : 4.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://psirt.bosch.com/security-advisories/BOSCH-SA-940448-BT.html	Mitigation Vendor Advisory
https://psirt.bosch.com/security-advisories/BOSCH-SA-940448-BT.html	Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:bosch:amc2_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:bosch:amc2:-:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:a:bosch:access_management_system:3.0:*:*:*:*:*:*:*

Configuration 3 (hide)

cpe:2.3:a:bosch:access_professional_edition:*:*:*:*:*:*:*:*

Configuration 4 (hide)

cpe:2.3:a:bosch:building_integration_system:*:*:*:*:*:*:*:*

History

21 Nov 2024, 05:51

Type	Values Removed	Values Added
CVSS	v2 : ~~3.6~~ v3 : ~~7.1~~	v2 : 3.6 v3 : 5.7
References	~~() https://psirt.bosch.com/security-advisories/BOSCH-SA-940448-BT.html - Mitigation, Vendor Advisory~~	() https://psirt.bosch.com/security-advisories/BOSCH-SA-940448-BT.html - Mitigation, Vendor Advisory

Information

Published : 2022-01-19 21:15

Updated : 2024-11-21 05:51

NVD link : CVE-2021-23842

Mitre link : CVE-2021-23842

CVE.ORG link : CVE-2021-23842

JSON object : View

Products Affected

bosch

amc2
access_management_system
building_integration_system
access_professional_edition
amc2_firmware

CWE

CWE-321

Use of Hard-coded Cryptographic Key

CWE-798

Use of Hard-coded Credentials

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