CVE-2021-27770: HCL Sametime is vulnerable to arbitrary HTTP requests

First published: Fri Apr 15 2022(Updated: )

The vulnerability was discovered within the “FaviconService”. The service takes a base64-encoded URL which is then requested by the webserver. We assume this service is used by the “meetings”-function where users can specify an external URL where the online meeting will take place.

Credit: psirt@hcl.com

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