Headline
MiniDVBLinux 5.4 Remote Root Command Execution Vulnerability
The application suffers from an OS command execution vulnerability. This can be exploited to execute arbitrary commands as root, through the ‘command’ GET parameter in /tpl/commands.sh.
Title: MiniDVBLinux 5.4 Remote Root Command Execution Vulnerability
Advisory ID: ZSL-2022-5718
Type: Local/Remote
Impact: System Access, DoS
Risk: (5/5)
Release Date: 16.10.2022
Summary
MiniDVBLinux™ Distribution (MLD). MLD offers a simple way to convert a standard PC into a Multi Media Centre based on the Video Disk Recorder (VDR) by Klaus Schmidinger. Features of this Linux based Digital Video Recorder: Watch TV, Timer controlled recordings, Time Shift, DVD and MP3 Replay, Setup and configuration via browser, and a lot more. MLD strives to be as small as possible, modular, simple. It supports numerous hardware platforms, like classic desktops in 32/64bit and also various low power ARM systems.
Description
The application suffers from an OS command execution vulnerability. This can be exploited to execute arbitrary commands as root, through the ‘command’ GET parameter in /tpl/commands.sh.
Vendor
MiniDVBLinux - https://www.minidvblinux.de
Affected Version
<=5.4
Tested On
MiniDVBLinux 5.4
BusyBox v1.25.1
Architecture: armhf, armhf-rpi2
GNU/Linux 4.19.127.203 (armv7l)
VideoDiskRecorder 2.4.6
Vendor Status
[24.09.2022] Vulnerability discovered.
[27.09.2022] Vendor contacted.
[15.10.2022] No response from the vendor.
[16.10.2022] Public security advisory released.
PoC
mldhd_root1.py
Credits
Vulnerability discovered by Gjoko Krstic - <[email protected]>
References
N/A
Changelog
[16.10.2022] - Initial release
Contact
Zero Science Lab
Web: https://www.zeroscience.mk
e-mail: [email protected]