Headline
ABB Cylon Aspect 3.08.03 (projectUpdateBSXFileProcess.php) Remote Guest2Root Exploit
The ABB BMS/BAS controller is vulnerable to code execution and sudo misconfiguration flaws. An authenticated remote code execution vulnerability in the firmware update mechanism allows an attacker with valid credentials to escalate privileges and execute commands as root. The process involves uploading a crafted .bsx file through projectUpdateBSXFileProcess.php, which is then moved to htmlroot and executed by projectUpdateBSXExecute.php. This script leverages sudo to run the uploaded bsx file, enabling the attacker to bypass input validation checks and execute arbitrary code, leading to full system compromise and unauthorized root access.
Title: ABB Cylon Aspect 3.08.03 (projectUpdateBSXFileProcess.php) Remote Guest2Root Exploit
Advisory ID: ZSL-2025-5947
Type: Local/Remote
Impact: System Access, DoS
Risk: (5/5)
Release Date: 22.05.2025
Summary
ASPECT is an award-winning scalable building energy management and control solution designed to allow users seamless access to their building data through standard building protocols including smart devices.
Description
The ABB BMS/BAS controller is vulnerable to code execution and sudo misconfiguration flaws. An authenticated remote code execution vulnerability in the firmware update mechanism allows an attacker with valid credentials to escalate privileges and execute commands as root. The process involves uploading a crafted .bsx file through projectUpdateBSXFileProcess.php, which is then moved to htmlroot and executed by projectUpdateBSXExecute.php. This script leverages sudo to run the uploaded bsx file, enabling the attacker to bypass input validation checks and execute arbitrary code, leading to full system compromise and unauthorized root access.
Vendor
ABB Ltd. - https://www.global.abb
Affected Version
NEXUS Series, MATRIX-2 Series, ASPECT-Enterprise, ASPECT-Studio
Firmware: <=3.08.03
Tested On
GNU/Linux 3.15.10 (armv7l)
GNU/Linux 3.10.0 (x86_64)
GNU/Linux 2.6.32 (x86_64)
Intel® Atom™ Processor E3930 @ 1.30GHz
Intel® Xeon® Silver 4208 CPU @ 2.10GHz
PHP/7.3.11
PHP/5.6.30
PHP/5.4.16
PHP/4.4.8
PHP/5.3.3
AspectFT Automation Application Server
lighttpd/1.4.32
lighttpd/1.4.18
Apache/2.2.15 (CentOS)
OpenJDK Runtime Environment (rhel-2.6.22.1.-x86_64)
OpenJDK 64-Bit Server VM (build 24.261-b02, mixed mode)
ErgoTech MIX Deployment Server 2.0.0
Vendor Status
[21.04.2024] Vulnerability discovered.
[22.04.2024] Vendor contacted.
[22.04.2024] Vendor responds.
[02.05.2024] Working with the vendor.
[21.05.2025] No response from the vendor.
[22.05.2025] Public security advisory released.
PoC
bsxroot.py
Credits
Vulnerability discovered by Gjoko Krstic - <[email protected]>
References
[1] https://packetstorm.news/files/id/194976/
[2] https://www.exploit-db.com/exploits/52305
Changelog
[22.05.2025] - Initial release
[26.05.2025] - Added reference [1] and [2]
Contact
Zero Science Lab
Web: https://www.zeroscience.mk
e-mail: [email protected]