Title: ABB Cylon Aspect 3.08.01 (caldavUpload.php) Funkalicious Exploit
Advisory ID: ZSL-2025-5926
Type: Local/Remote
Impact: Security Bypass, System Access, DoS
Risk: (5/5)
Release Date: 06.03.2025

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

Yo, check it - the ABB BMS/BAS system's got a slick little weakness in them caldavInstall.php, caldavInstallAgendav.php, and caldavUpload.php files. All you gotta do is drop that skipChecksum beat in the POST vibe, and bam, the system skips all that MD5 checksum nonsense, no EXPERTMODE needed to crank the funk. This lets any slick cat without a login slide in some jacked-up CalDAV ZIP files, no questions asked. We're talkin' tampered tunes hittin' the deck, openin' the door to messin' with the system or droppin' some nasty uploads, all unauthorized-like. That's the funky flaw, baby - straight-up tamper town.

Vendor

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

Affected Version

NEXUS Series, MATRIX-2 Series, ASPECT-Enterprise, ASPECT-Studio
Firmware: <=3.08.01

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)
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.
[07.08.2024] Vendor released version 3.08.02 to address this issue.
[06.03.2025] Public security advisory released.

PoC

funkalicious.py

Credits

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

References

[1] https://www.zeroscience.mk/en/vulnerabilities/ZSL-2024-5860.php
[2] https://packetstorm.news/files/id/189617/

Changelog

[06.03.2025] - Initial release

Contact

Zero Science Lab

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