Vulnerability · Published Jan 19, 2022 · Assigned by bosch
CVE-2021-23842Use of Hard-coded Cryptographic Key
Medium 5.7
In plain English
A medium-severity security flaw in AMC2 from Bosch. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities).
Official 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.
Affected products (as reported)
Weakness: CWE-321 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
References
- https://psirt.bosch.com/security-advisories/BOSCH-SA-940448-BT.html x_refsource_CONFIRM