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Missing XML Validation

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Last revision (mm/dd/yy): 05/27/2009

Vulnerabilities Table of Contents

Description

Failure to enable validation when parsing XML gives an attacker the opportunity to supply malicious input.

Most successful attacks begin with a violation of the programmer's assumptions. By accepting an XML document without validating it against a DTD or XML schema, the programmer leaves a door open for attackers to provide unexpected, unreasonable, or malicious input. It is not possible for an XML parser to validate all aspects of a document's content; a parser cannot understand the complete semantics of the data. However, a parser can do a complete and thorough job of checking the document's structure and therefore guarantee to the code that processes the document that the content is well-formed.


Risk Factors

  • Talk about the factors that make this vulnerability likely or unlikely to actually happen
  • Discuss the technical impact of a successful exploit of this vulnerability
  • Consider the likely [business impacts] of a successful attack


Examples

Short example name

A short example description, small picture, or sample code with links

Short example name

A short example description, small picture, or sample code with links


Related Attacks


Related Vulnerabilities

Related Controls


Related Technical Impacts


References

Note: A reference to related CWE or CAPEC article should be added when exists. Eg: