CVE Vulnerabilities

CVE-2020-16142

Use of Externally-Controlled Format String

Published: Aug 27, 2020 | Modified: Nov 07, 2023
CVSS 3.x
3.5
LOW
Source:
NVD
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CVSS 2.x
2.9 LOW
AV:A/AC:M/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
Ubuntu

On Mercedes-Benz C Class AMG Premium Plus c220 BlueTec vehicles, the Bluetooth stack mishandles %x and %c format-string specifiers in a device name in the COMAND infotainment software.

Weakness

The product uses a function that accepts a format string as an argument, but the format string originates from an external source.

Affected Software

Name Vendor Start Version End Version
Comand Mercedes-benz - (including) - (including)

Extended Description

When an attacker can modify an externally-controlled format string, this can lead to buffer overflows, denial of service, or data representation problems. It should be noted that in some circumstances, such as internationalization, the set of format strings is externally controlled by design. If the source of these format strings is trusted (e.g. only contained in library files that are only modifiable by the system administrator), then the external control might not itself pose a vulnerability.

Potential Mitigations

References