Testing for Web Services

OWASP Testing Guide v3 Table of Contents

This article is part of the OWASP Testing Guide v3. The entire OWASP Testing Guide v3 can be downloaded here.

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4.8 Web Services Testing

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"By 2005 Web services shall have reopened over 70% of the attack paths against internet-connected systems, which were closed by network firewalls in the 1990's" -Gartner Oct 2002

SOA (Service Orientated Architecture)/Web services applications are up-and-coming systems which are enabling businesses to interoperate and are growing at an unprecedented rate. Webservice "clients" are generally not user web front-ends but other backend servers. Webservices are exposed to the net like any other service but can be used on HTTP, FTP, SMTP, MQ among other transport protocols.

The vulnerabilities in web services are similar to other vulnerabilities such as SQL injection, information disclosure ad leakage etc but web services also have unique XML/parser related vulnerabilities which are discussed here also.

4.8.1 XML Structural Testing
4.8.2 XML Content-level Testing
4.8.3 HTTP GET parameters/REST Testing
4.8.4 Naughty SOAP attachments
4.8.5 Replay Testing

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OWASP Testing Guide v2

Here is the OWASP Testing Guide v2 Table of Contents OWASP Testing Guide v2 Table of Contents