Title: ABB Cylon Aspect 3.08.01 (bigUpload.php) Remote Code Execution
Advisory ID: ZSL-2024-5828
Type: Local/Remote
Impact: System Access, DoS
Risk: (5/5)
Release Date: 23.09.2024

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 ABB BMS/BAS controller suffers from a remote code execution vulnerability. The vulnerable uploadFile() function in bigUpload.php improperly reads raw POST data using the php://input wrapper without sufficient validation. This data is passed to the fwrite() function, allowing arbitrary file writes. Combined with an improper sanitization of file paths, this leads to directory traversal, allowing an attacker to upload malicious files to arbitrary locations. Once a malicious file is written to an executable directory, an authenticated attacker can trigger the file to execute code and gain unauthorized access to the building controller.

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)

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 releases version 3.08.02 to address this issue.
[23.09.2024] Uncoordinated public security advisory released.

PoC

abb_aspect_rce1.txt

Credits

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

References

[1] https://search.abb.com/library/Download.aspx?DocumentID=9AKK108469A7497&LanguageCode=en&DocumentPartId=&Action=Launch
[2] https://cve.mitre.org/cgi-bin/cvename.cgi?name=2024-6298
[3] https://nvd.nist.gov/vuln/detail/CVE-2024-6298
[4] https://packetstormsecurity.com/files/181803/ABB-Cylon-Aspect-3.08.01-Remote-Code-Execution.html

Changelog

[23.09.2024] - Initial release
[24.09.2024] - Added reference [4]

Contact

Zero Science Lab

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