Siemens Polarion Multiple Cross Site Scripting and HTML Injection Vulnerabilities



Date Discovered

November 25, 2019


Siemens Polarion is prone to multiple cross-site scripting vulnerabilities and an HTML-injection vulnerability. Successful exploits will allow attacker-supplied HTML and script code to run in the context of the affected browser, potentially allowing the attacker to steal cookie-based authentication credentials or control how the site is rendered to the user. Other attacks are also possible. Versions prior to Siemens Polarion 19.2 are vulnerable.

Technologies Affected

  • Siemens Polarion 17
  • Siemens Polarion 17.1
  • Siemens Polarion 17.2
  • Siemens Polarion 17.3
  • Siemens Polarion 18
  • Siemens Polarion 18.1
  • Siemens Polarion 18.2
  • Siemens Polarion 18.3
  • Siemens Polarion 19
  • Siemens Polarion 19.1
  • Siemens Polarion Subversion webclient 1.7.14


Run all software as a nonprivileged user with minimal access rights.
Attackers may successfully exploit client flaws in the browser through cross-site scripting vulnerabilities. When possible, run client software as regular user accounts with limited access to system resources. This may limit the immediate consequences of client-side vulnerabilities.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to detect and block attacks and anomalous activity such as requests containing suspicious URI sequences. Since the webserver may log such requests, review its logs regularly.

Do not follow links provided by unknown or untrusted sources.
Web users should be cautious about following links to sites that are provided by unfamiliar or suspicious sources. Filtering HTML from emails may help remove a possible vector for transmitting malicious links to users.

Set web browser security to disable the execution of script code or active content.
Since successful exploits of these issues allow malicious code to execute in web clients, consider disabling support for script code and active content within the client browser. Note that this mitigation tactic might adversely affect legitimate websites that rely on the execution of browser-based script code.

Currently, we are not aware of any vendor-supplied patches. If you feel we are in error or are aware of more recent information, please mail us at:




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