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CVE-2021-23842

Common vulnerabilities & exposures (CVE)

CVE databaseCVE database blogpostRelease & EoL database
 
Published at: - 19-01-2022 10:15
Last modified: - 28-01-2022 06:58
Total changes: - 3

Description

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Low
Attack complexity
Local
Attack vector
None
Availability
High
Confidentiality
High
Integrity
Low
Privileges required
Unchanged
Scope
None
User interaction
7.1
Base score
1.8
5.2
Exploitability score
Impact score
 

Verification logic

OR
AND
OR
vendor=bosch AND product=amc2_firmware AND version=-
OR
vendor=bosch AND product=amc2 AND version=-
OR
vendor=bosch AND product=access_management_system AND version=3.0
OR
vendor=bosch AND product=access_professional_edition AND versionEndIncluding=3.8.0
OR
vendor=bosch AND product=building_integration_system AND versionEndExcluding=4.9.1
 

Reference

 


Keywords

NVD

 

CVE-2021-23842

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures

 

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