Title: ABB Cylon Aspect 3.07.02 (sshUpdate.php) Unauthenticated Remote SSH Service Control
Advisory ID: ZSL-2024-5838
Type: Local/Remote
Impact: Security Bypass, DoS
Risk: (3/5)
Release Date: 10.10.2024

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 BMS/BAS controller suffers from a vulnerability that allows an unauthenticated attacker to enable or disable the SSH daemon by sending a POST request to sshUpdate.php with a simple JSON payload. This can be exploited to start the SSH service on the remote host without proper authentication, potentially enabling unauthorized access or stop and deny service access.

Vendor

ABB Ltd. - https://www.global.abb

Affected Version

NEXUS Series, MATRIX-2 Series, ASPECT-Enterprise, ASPECT-Studio
Firmware: <=3.07.02

Tested On

GNU/Linux 3.15.10 (armv7l)
GNU/Linux 3.10.0 (x86_64)
GNU/Linux 2.6.32 (x86_64)
Intel(R) Atom(TM) Processor E3930 @ 1.30GHz
Intel(R) Xeon(R) 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)

Vendor Status

[21.04.2024] Vulnerability discovered.
[22.04.2024] Vendor contacted.
[22.04.2024] Vendor responds.
[02.05.2024] Working with the vendor.
[18.10.2023] Vendor released version 3.08.00 to address this issue.
[10.10.2024] Public security advisory released.

PoC

abb_aspect_ssh1.txt

Credits

Vulnerability discovered by Gjoko Krstic - <gjoko@zeroscience.mk>

References

[1] https://packetstormsecurity.com/files/182163/ABB-Cylon-Aspect-3.07.02-sshUpdate.php-Unauthenticated-Remote-SSH-Service-Control.html
[2] https://cxsecurity.com/issue/WLB-2024100021

Changelog

[10.10.2024] - Initial release
[12.10.2024] - Added reference [1]
[23.10.2024] - Added reference [2]

Contact

Zero Science Lab

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