Silverlight cross-domain policy
Summary: PortSwigger describes the Silverlight cross-domain policy as controlling whether Silverlight client components on other domains can have two-way interaction with the publishing domain. Any domain the policy allows can potentially attack users of the application, gaining full access within the security context of a logged-in user, and vulnerabilities in an allowed domain could be leveraged by a third-party attacker to exploit that trust.
Why it matters: Every domain listed in the policy is a domain your application fully trusts, so a single inappropriate entry hands an attacker the logged-in user's access to the application.
Read the original at PortSwigger Research ↗
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