An improper handling of a malformed API request to an API server in Bosch BT software products can allow an unauthenticated attacker to cause a Denial of Service (DoS) situation.

A crafted configuration packet sent by an authenticated administrative user can be used to execute arbitrary commands in system context. This issue also affects installations of the VRM, DIVAR IP, BVMS with VRM installed, the VIDEOJET decoder (VJD-7513 and VJD-8000).

By executing a special command, an user with administrative rights can get access to extended debug functionality on the VRM allowing an impact on integrity or availability of the installed software. This issue also affects installations of the DIVAR IP and BVMS with VRM installed.

An error in a page handler of the VRM may lead to a reflected cross site scripting (XSS) in the web-based interface. To exploit this vulnerability an attack must be able to modify the HTTP header that is sent. This issue also affects installations of the DIVAR IP and BVMS with VRM installed.

An unauthenticated attacker is able to send a special HTTP request, that causes a service to crash. In case of a standalone VRM or BVMS with VRM installation this crash also opens the possibility to send further unauthenticated commands to the service. On some products the interface is only local accessible lowering the CVSS base score. For a list of modified CVSS scores, please see the official Bosch Advisory Appendix chapter Modified CVSS Scores for CVE-2021-23859

Improper Access Control in the RCP+ server of the Bosch Video Recording Manager (VRM) component allows arbitrary and unauthenticated access to a limited subset of certificates, stored in the underlying Microsoft Windows operating system. The fixed versions implement modified authentication checks. Prior releases of VRM software version 3.70 are considered unaffected. This vulnerability affects VRM v3.70.x, v3.71 < v3.71.0034 and v3.81 < 3.81.0050; DIVAR IP 5000 3.80 < 3.80.0039; BVMS all versions using VRM.