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ABB Cylon Aspect 3.08.02 (aspectMemory.php) Arbitrary Heap Memory Configuration

High
Advisory ID
ZSL-2024-5883
Release Date
13 December 2024
Vendor
Affected Version
NEXUS Series, MATRIX-2 Series, ASPECT-Enterprise, ASPECT-Studio, Firmware: <=3.08.02
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), ErgoTech MIX Deployment Server 2.0.0
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

An authenticated access vulnerability in the aspectMemory.php script of ABB Cylon Aspect BMS/BAS controllers allows attackers to set arbitrary values for Java heap memory parameters (HEAPMIN and HEAPMAX). This configuration is written to /usr/local/aam/etc/javamem. The absence of input validation can lead to system performance degradation, Denial-of-Service (DoS) conditions, and crashes of critical Java applications.

Proof of Concept
Disclosure Timeline
21.04.2024Vulnerability discovered.
22.04.2024Vendor contacted.
22.04.2024Vendor responds.
02.05.2024Working with the vendor.
03.12.2024Vendor releases version 3.08.03 to address this issue.
13.12.2024Coordinated public security advisory released.
Credits
Vulnerability discovered by Gjoko Krstic
References
Changelog
13.12.2024Initial release
15.12.2024Added reference [4]