Insecure Cross Document Messaging
Written By
Anushka Tiwari
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Issue
-
Cross Document Messaging (also known as Web Messaging) introduced the postMessage() method, with which plaintext messages can be sent cross-origin. It consists of two parameters: “message”, and “targetOrigin”. If "targetOrigin" is set to ''*" this indicates that it can disclose the data to the unknown origin, or an attacker's machine
- Steps to reproduce:
- Start the server
- Hit the particular URL
-
Search for the postMessage("","*")
Resolution
-
The observed behavior is a known bug that has been addressed by the LPS-195491.
Additional Information
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