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Path Traversal occurrences in Platinum
Platinum Upnp SDK through 1.2.0 has a directory traversal vulnerability. The attack could remote attack victim by sending http://ip:port/../privacy.avi URL to compromise a victim's privacy. (2022-01-21, CVE-2020-19858)
Platinum UPnP SDK 1.2.0 allows Directory Traversal in Core/PltHttpServer.cpp because it checks for /.. where it should be checking for ../ instead. (2019-09-26, CVE-2019-16903)
Why Path Traversal can be dangerous
Relative Path Confusion means that your web server is configured to serve responses to ambiguous URLs. This configuration can possibly cause confusion about the correct relative path for the URL. It is also an issue of resources, such as images, styles etc., which are specified in the response using relative path, not the absolute URL.
If the web browser permits to parse "cross-content" response, the attacker may be able to fool the web browser into interpreting HTML into other content types, which can then lead to a cross site scripting attack (link do XSS).