CAPEC-256: SOAP Array Overflow
Description
Extended Description
Applications often need to transform data in and out of serialized data formats, such as XML and YAML, by using a data parser. It may be possible for an adversary to inject data that may have an adverse effect on the parser when it is being processed. By supplying oversized payloads in input vectors that will be processed by the parser, an adversary can cause the parser to consume more resources while processing, causing excessive memory consumption and CPU utilization, and potentially cause execution of arbitrary code. An adversary's goal is to leverage parser failure to their advantage. DoS is most closely associated with web services, SOAP, and Rest, because remote service requesters can post malicious data payloads to the service provider designed to exhaust the service provider's memory, CPU, and/or disk space. This attack exploits the loosely coupled nature of web services, where the service provider has little to no control over the service requester and any messages the service requester sends.
Severity :
High
Possibility :
Type :
Detailed
Relationships with other CAPECs
This table shows the other attack patterns and high level categories that are related to this attack pattern.
Prerequisites
This table shows the other attack patterns and high level categories that are related to this attack pattern.
- The targeted SOAP server must trust that the array size as stated in messages it receives is correct, but read through the entire content of the message regardless of the stated size of the array.
Skills required
This table shows the other attack patterns and high level categories that are related to this attack pattern.
Taxonomy mappings
Mappings to ATT&CK, OWASP and other frameworks.
Resources required
The attacker must be able to craft malformed SOAP messages, specifically, messages with arrays where the stated array size understates the actual size of the array in the message.
Related CWE
A Related Weakness relationship associates a weakness with this attack pattern. Each association implies a weakness that must exist for a given attack to be successful.
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