CAPEC Details
Name SOAP Manipulation
Likelyhood of attack Typical severity
Medium High
Summary Simple Object Access Protocol (SOAP) is used as a communication protocol between a client and server to invoke web services on the server. It is an XML-based protocol, and therefore suffers from many of the same shortcomings as other XML-based protocols. Adviseries can make use these shortcomings to mount an denial of service attack, disclose information and execute arbitrary code. This includes a SOAP parameter tampering attack in which an attacker sends a SOAP message where the field values are other than what the server is likely to expect in order to precipitate non-standard server behavior.
Prerequisites An application uses SOAP-based web service api. An application does not perform sufficient input validation to ensure that user-controllable data is safe for an XML parser. The targeted server either fails to verify that data in SOAP messages conforms to the appropriate XML schema, or it fails to correctly handle the complete range of data allowed by the schema.
Related Weaknesses
CWE ID Description
CWE-707 Improper Neutralization
Related CAPECS
CAPEC ID Description
CAPEC-110 An attacker modifies the parameters of the SOAP message that is sent from the service consumer to the service provider to initiate a SQL injection attack. On the service provider side, the SOAP message is parsed and parameters are not properly validated before being used to access a database in a way that does not use parameter binding, thus enabling the attacker to control the structure of the executed SQL query. This pattern describes a SQL injection attack with the delivery mechanism being a SOAP message.
CAPEC-228 An attacker injects malicious content into an application's DTD in an attempt to produce a negative technical impact. DTDs are used to describe how XML documents are processed. Certain malformed DTDs (for example, those with excessive entity expansion as described in CAPEC 197) can cause the XML parsers that process the DTDs to consume excessive resources resulting in resource depletion.
CAPEC-278 An adversary manipulates a web service related protocol to cause a web application or service to react differently than intended. This can either be performed through the manipulation of call parameters to include unexpected values, or by changing the called function to one that should normally be restricted or limited. By leveraging this pattern of attack, the adversary is able to gain access to data or resources normally restricted, or to cause the application or service to crash.