The KnowBe4 Security Awareness Training application before 2020-01-10 contains a redirect function that does not validate the destination URL before redirecting. The response has a SCRIPT element that sets window.location.href to an arbitrary https URL.
The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.
Link | Tags |
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https://www.doyler.net/security-not-included/knowbe4-vulnerabilities | exploit |