XML Injection (aka Blind XPath Injection)
Weakness ID: 91 (Weakness Base)Status: Draft
+ Description

Description Summary

The software does not properly filter or quote special characters or reserved words that are used in XML, allowing attackers to modify the syntax, content, or commands of the XML before it is processed by an end system.
+ Time of Introduction
  • Architecture and Design
  • Implementation
+ Applicable Platforms



+ Potential Mitigations

Assume all input is malicious. Use an appropriate combination of black lists and white lists to ensure only valid and expected input is processed by the system.

+ Relationships
NatureTypeIDNameView(s) this relationship pertains toView(s)
ChildOfWeakness ClassWeakness Class74Failure to Sanitize Data into a Different Plane ('Injection')
Development Concepts (primary)699
Research Concepts (primary)1000
ChildOfCategoryCategory713OWASP Top Ten 2007 Category A2 - Injection Flaws
Weaknesses in OWASP Top Ten (2007) (primary)629
ChildOfCategoryCategory727OWASP Top Ten 2004 Category A6 - Injection Flaws
Weaknesses in OWASP Top Ten (2004) (primary)711
ParentOfWeakness BaseWeakness Base643Failure to Sanitize Data within XPath Expressions ('XPath injection')
Development Concepts (primary)699
Research Concepts (primary)1000
ParentOfWeakness BaseWeakness Base652Failure to Sanitize Data within XQuery Expressions ('XQuery Injection')
Development Concepts (primary)699
Research Concepts (primary)1000
+ Research Gaps

Under-reported. This is likely found regularly by third party code auditors, but there are very few publicly reported examples.

+ Theoretical Notes

In vulnerability theory terms, this is a representation-specific case of a Data/Directive Boundary Error.

+ Taxonomy Mappings
Mapped Taxonomy NameNode IDFitMapped Node Name
PLOVERXML injection (aka Blind Xpath injection)
OWASP Top Ten 2007A2CWE More SpecificInjection Flaws
OWASP Top Ten 2004A6CWE More SpecificInjection Flaws
WASC23XML Injection
+ Related Attack Patterns
CAPEC-IDAttack Pattern Name
(CAPEC Version: 1.4)
83XPath Injection
+ References
Amit Klein. "Blind XPath Injection". 2004-05-19. <http://www.modsecurity.org/archive/amit/blind-xpath-injection.pdf>.
+ Maintenance Notes

The description for this entry is generally applicable to XML, but the name includes "blind XPath injection" which is more closely associated with CWE-643. Therefore this entry might need to be deprecated or converted to a general category - although injection into raw XML is not covered by CWE-643 or CWE-652.

+ Content History
Submission DateSubmitterOrganizationSource
PLOVERExternally Mined
Modification DateModifierOrganizationSource
2008-07-01Eric DalciCigitalExternal
updated Time of Introduction
Suggested OWASP Top Ten 2004 mapping
2008-09-08CWE Content TeamMITREInternal
updated Relationships, Other Notes, Taxonomy Mappings
2008-10-14CWE Content TeamMITREInternal
updated Maintenance Notes, Other Notes, Theoretical Notes