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https://issues.apache.org/jira/browse/XERCESJ-1280?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Glavassevich updated XERCESJ-1280:
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Summary: XML Schema: XPath parser gets stuck in infinite loop for some
invalid XPath expressions (was: XML Schema: XPath parser gets stuck in
infinite loop for some valid XPath expressions)
> XML Schema: XPath parser gets stuck in infinite loop for some invalid XPath
> expressions
> ---------------------------------------------------------------------------------------
>
> Key: XERCESJ-1280
> URL: https://issues.apache.org/jira/browse/XERCESJ-1280
> Project: Xerces2-J
> Issue Type: Bug
> Components: XML Schema Structures
> Affects Versions: 2.9.1
> Reporter: Michael Glavassevich
> Assignee: Michael Glavassevich
>
> Xerces' schema loader hangs in the XPath parser while attempting to process
> the following invalid schema:
> <?xml version="1.0" encoding="UTF-8"?>
> <schema xmlns="http://www.w3.org/2001/XMLSchema";>
> <complexType name="NewComplexType">
> <sequence>
> <element name="NewElement" type="string">
> <key name="abc">
> <selector xpath="\"></selector>
> </key>
> </element>
> </sequence>
> </complexType>
> </schema>
> There's a large case block in the XPath scanner which is missing a "default:"
> which causes it to loop forever on the same character in the invalid
> expression without ever progressing to the next character in the string (or
> breaking out of the loop if it's at the end of the string).
> See https://bugs.eclipse.org/bugs/show_bug.cgi?id=209733 where this bug was
> first reported.
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