BoschCVELIST:CVE-2021-23842CVE-2021-23842 Use of Hard-coded Cryptographic Key
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
AI Score
Confidence
High
EPSS
Percentile
12.6%
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.
CNA 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"
}
]
}
]Related
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
AI Score
Confidence
High
EPSS
Percentile
12.6%