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http://issues.apache.org/bugzilla/show_bug.cgi?id=38791

           Summary: unescaping of escaped percent (%25) fails
           Product: Security
           Version: unspecified
          Platform: PC
        OS/Version: Windows Server 2003
            Status: NEW
          Severity: major
          Priority: P2
         Component: C++ Signature
        AssignedTo: security-dev@xml.apache.org
        ReportedBy: [EMAIL PROTECTED]


The C++ XML-Security library version 1.2 has a bug in XSECDOMUtils.cpp that
causes it to unescape already unescaped percent characters. The bug can be
reproduced with any xml file that contains an URI with an escaped percent
character (%25).
File Version is:
$Id: XSECDOMUtils.cpp,v 1.26 2005/02/03 13:53:54 milan Exp $

The error happens in line 684. There the starting index for the new percent
search isn't incremented, thus causing it to find the just unescaped percent
character.
a simple changed from
percentIndex = XMLString::indexOf(retPath, chPercent, percentIndex);
to
percentIndex = XMLString::indexOf(retPath, chPercent, ++percentIndex);
fixes this problem.

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