SAP NetWeaver AS Java version 7.4 suffers from multiple XXE vulnerabilities. An attacker can read an arbitrary file on a server by sending a correct XML request with a crafted DTD and reading the response from the service. An attacker can perform a DoS attack (for example, XML Entity Expansion). An SMB Relay attack is a type of Man-in-the-Middle attack where the attacker asks the victim to authenticate into a machine controlled by the attacker, then relays the credentials to the target. The attacker forwards the authentication information both ways and gets access.