title: Use of Hard-coded Cryptographic Key
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.
problem types: CWE-321 Use of Hard-coded Cryptographic Key
affected:
{
product: AMS
vendor: Bosch
versions:
lessThan: 4.0, status: affected, version: unspecified, versionType: custom
}
{
product: APE
vendor: Bosch
versions:
lessThanOrEqual: 3.8.x, status: affected, version: unspecified, versionType: custom
}
{
product: BIS
vendor: Bosch
versions:
lessThan: 4.9.1, status: affected, version: unspecified, versionType: custom
}
{
product: AMC2
vendor: Bosch
versions:
status: affected, version: all
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: ADJACENT_NETWORK
availabilityImpact: NONE
baseScore: 5.7
baseSeverity: MEDIUM
confidentialityImpact: HIGH
integrityImpact: NONE
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: REQUIRED
vectorString: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
version: 3.1
]