[jira] [Created] (PDFBOX-2187) ArrayIndexOutOfBoundsException in TIFFFaxDecoder

["Tilman Hausherr (JIRA)" <ji...@apache.org>]

Tilman Hausherr created PDFBOX-2187:
---------------------------------------

             Summary: ArrayIndexOutOfBoundsException in TIFFFaxDecoder
                 Key: PDFBOX-2187
                 URL: https://issues.apache.org/jira/browse/PDFBOX-2187
             Project: PDFBox
          Issue Type: Bug
          Components: Rendering
    Affects Versions: 1.8.6, 1.8.7, 2.0.0
            Reporter: Tilman Hausherr
            Assignee: Tilman Hausherr
             Fix For: 1.8.7, 2.0.0


I get two types of exceptions with several files from the digitalcorpora site:

{code}
Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 16
        at org.apache.pdfbox.filter.ccitt.TIFFFaxDecoder.decodeT6(TIFFFaxDecoder
.java:1002)        at org.apache.pdfbox.filter.CCITTFaxFilter.decode(CCITTFaxFilter.java:95)
...
{code}

or

{code}
Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException:1
       at org.apache.pdfbox.filter.ccitt.TIFFFaxDecoder.decodeT6(TIFFFaxDecoder.java:916)       at org.apache.pdfbox.filter.CCITTFaxFilter.decode(CCITTFaxFilter.java:95)
{code}

The fix, which is also used by others who use the same code and which solves both exceptions, is to increase w by one in this segment:

{code}
        this.prevChangingElems = new int[w];
        this.currChangingElems = new int[w];
{code}



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