📄 ABB Cylon Aspect 3.08.02 MIX Session Validation Bypass

ABB Cylon Aspect 3.08.02 (MIX) Session Validation Bypass
    
    
    Vendor: ABB Ltd.
    Product web page: https://www.global.abb
    Affected version: NEXUS Series, MATRIX-2 Series, ASPECT-Enterprise, ASPECT-Studio
                      Firmware: <=3.08.02
    
    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: ABB Cylon Aspect suffers from a broken session management issue. The
    backend implements inconsistent session validation by prioritizing the
    Authorization header over the PHPSESSID cookie, which is typically used
    to authenticate access to the controller system’s admin panel. While the
    PHPSESSID governs access to core configuration areas, the Authorization
    header acts as a second factor for authenticating against the HMI interface
    exposed on port 7226 by the mix.jar service. However, the system fails to
    enforce both factors simultaneously. If a client supplies a valid-looking
    Authorization header, access is granted, even in the absence of a valid
    PHPSESSID. This flaw breaks the expected session integrity model and allows
    an attacker to bypass proper authentication by forging or reusing the
    Authorization header alone, effectively nullifying multi-factor session
    enforcement.
    
    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-2025-5938
    Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2025-5938.php
    
    
    21.04.2024
    
    --
    
    
    $ cat project
    
                     P   R   O   J   E   C   T
    
                            .|
                            | |
                            |'|            ._____
                    ___    |  |            |.   |' .---"|
            _    .-'   '-. |  |     .--'|  ||   | _|    |
         .-'|  _.|  |    ||   '-__  |   |  |    ||      |
         |' | |.    |    ||       | |   |  |    ||      |
     ____|  '-'     '    ""       '-'   '-.'    '`      |____
    ░▒▓███████▓▒░░▒▓███████▓▒░ ░▒▓██████▓▒░░▒▓█▓▒░▒▓███████▓▒░  
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    ░▒▓███████▓▒░░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░▒▓█▓▒░▒▓█▓▒░░▒▓█▓▒░                                                            
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    $ curl http://192.168.73.31:7226/servlet/UserManager \
    > -d "newuser=test1&password=test1&passwordConfirm=test1&Insert=Add" \
    > -H "Authorization: Basic ***"