HomeAutomation v3.3.2 Open Redirect

Title: HomeAutomation v3.3.2 Open Redirect
Advisory ID: ZSL-2019-5559
Type: Local/Remote
Impact: Spoofing
Risk: (2/5)
Release Date: 29.12.2019
Summary
HomeAutomation is an open-source web interface and scheduling solution. It was initially made for use with the Telldus TellStick, but is now based on a plugin system and except for Tellstick it also comes with support for Crestron, OWFS and Z-Wave (using OpenZWave). It controls your devices (switches, dimmers, etc.) based on an advanced scheduling system, taking into account things like measurements from various sensors. With the houseplan view you can get a simple overview of the status of your devices at their location in your house.
Description
Input passed via the 'redirect' GET parameter in 'api.php' script is not properly verified before being used to redirect users. This can be exploited to redirect a user to an arbitrary website e.g. when a user clicks a specially crafted link to the affected script hosted on a trusted domain.
Vendor
Tom Rosenback and Daniel Malmgren - http://karpero.mine.nu/ha/
Affected Version
3.3.2
Tested On
Apache/2.4.41 (centos) OpenSSL/1.0.2k-fips
Apache/2.4.29 (Ubuntu)
PHP/7.4.0RC4
PHP/7.3.11
PHP 7.2.24-0ubuntu0.18.04.1
Vendor Status
[06.11.2019] Vulnerability discovered.
[07.11.2019] Vendor contacted.
[29.11.2019] No response from the vendor.
[30.11.2019] Vendor contacted.
[28.12.2019] No response from the vendor.
[29.12.2019] Public security advisory released.
PoC
homeautomation_redirect.txt
Credits
Vulnerability discovered by Gjoko Krstic - <gjoko@zeroscience.mk>
References
N/A
Changelog
[29.12.2019] - Initial release
Contact
Zero Science Lab

Web: http://www.zeroscience.mk
e-mail: lab@zeroscience.mk