It also includes an attack on embedded devices. With time, several public XXE problems have come to light. This vulnerability can be easily understood with the help of pertinent XEE examples. Here are a few that shall help clarify things.
Susceptibility to XXE attacks means vulnerability of the application to denial of service attacks, including Billion Laughs Attack.If an application uses SOAP before version 1.2, it may be vulnerable to XXE attacks if XML entities get passed to the SOAP framework.XML is used by SAML for identity assertions, which, in turn, may be vulnerable. If an application uses SAML to process identity within a single sign-in SSO or federated security purposes, the chances of XXE attack is high.It is always better to consult a reference like ‘XXE Prevention’ by OWASP Cheat Sheet. The mechanism for disabling DTD processing may vary from one processor to another. It also happens when any XML processors in SOAP-based web services or applications have DTDs or Document Type Definitions enabled.It, in turn, gets parsed by an XML processor. It occurs in XXE Vulnerability when the application directly accepts XML inserts from untrusted data or uploads from untrusted sources into XML documents.XML-based downstream integrations or web services and applications are prone to attack in conditions. As a result of this attack, denial of service, confidential data disclosure, port scanning from the machine perspective where the parser is located, server-side request forgery, and other system impact results. It is also referred to as XML External Entity Injection. This attack takes place due to web security based vulnerability when a reference to an external entity containing XML input gets possessed by an XML parser that is weakly configured. OWASP defines XML External Entity as an attack against an XML input parsing application. In simple words, an XEE attack is a web security vulnerability using which an attacker interferes with XML Data application processing. It also results in gaining access to remote and local content and services. Attackers use XXE or XML External Entity to cause DoS or Denial of Service.
This attack abuses a rarely used but broadly available feature of XML parsers. Practical training in XEE Role Modeling and Practice Sessions.An XXE attack is referred to as an attack that takes place against an application parsing XML input.
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