Make-Shift Brand Impersonation: Abusing Trusted Domains with Open Redirects
A KnowBe4 Threat Lab publication Authors: Daniel Netto, Jeewan Singh Jalal, Anand Bodke, and Martin Kraemer Executive Summary Attackers exploit redirects that lack safeguarding mechanisms to borrow the domain reputation of the redirect service, obfuscate the actual destination and exploit trust in known sources. Whitelisting URLs, only allowing a predefined set of URLs to be rewritten, is an effective countermeasures against the vulnerability on the server side.