← Advisories

dbaudio R1 v2.14.4 DNS-SD Service Unquoted Service Path Privilege Escalation

Low
Advisory ID
ZSL-2016-5293
Release Date
14 January 2016
Vendor
d&b audiotechnik GmbH - http://www.dbaudio.com
Affected Version
R1 2.14.4 and DNS-SD 379.32.2
CVE
N/A
Tested On
Microsoft Windows 7 Professional SP1 (EN), Microsoft Windows 7 Ultimate SP1 (EN)
Summary

The R1 Remote control software succeeds the d&b ROPE C software. It is a software package designed to operate d&b amplifiers (D12, D6, E-PAC with Display) remotely using the d&b Remote network based on CAN-Bus technology.

Description

The application suffers from an unquoted search path issue impacting the service 'dbaudio DNS-SD' for Windows deployed as part of dbaudio R1. This could potentially allow an authorized but non-privileged local user to execute arbitrary code with elevated privileges on the system. A successful attempt would require the local user to be able to insert their code in the system root path undetected by the OS or other security applications where it could potentially be executed during application startup or reboot. If successful, the local user’s code would execute with the elevated privileges of the application.

Proof of Concept
Disclosure Timeline
01.12.2015Vulnerability discovered.
05.12.2015Vendor contacted.
06.01.2016No response from the vendor.
14.01.2015Public security advisory released.
Credits
Vulnerability discovered by Gjoko Krstic
References
Changelog
14.01.2016Initial release
16.01.2016Added reference [1] and [2]