Headline
ABB Cylon Aspect 3.08.01 (caldavUpload.php) Funkalicious Exploit
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.
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® 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.
[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