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Hi This is Kartik Shenoy, Today we are going to talk about XML Signature Wrapping Attack For communication with cloud servers, Simple Object Access Protocol is used. Messages exchanged are in an XML format like this. The body is processed by the server. Now, to protect the data from modifications, ID referencing is used. Also, to ensure integrity an XML Signature is added in the Header tag. The XML Signature typically has this structure. The Reference tag will store the reference of the element whose signed digest is computed. Both the timestamp and the body are signed in case it is sent over an insecure transport while only the Timestamp is signed when sent over a secure channel. For securing the channel, SSL/TLS may be used. There are 4 types of xml signature wrapping attacks. They are Simple Ancestry Context, Optional Element Context, Sibling Value Context, Sibling Order Context. Now we are going to discuss the Simple Ancestry Context Attack. This Attack can not be performed if the
