[jira] [Created] (PDFBOX-2655) PDCIDFontType2Embedder.buildCIDSet() ArrayOutOfBounds

["Alex Nevidomsky (JIRA)" <ji...@apache.org>]

Alex Nevidomsky created PDFBOX-2655:
---------------------------------------

             Summary: PDCIDFontType2Embedder.buildCIDSet()  ArrayOutOfBounds
                 Key: PDFBOX-2655
                 URL: https://issues.apache.org/jira/browse/PDFBOX-2655
             Project: PDFBox
          Issue Type: Bug
          Components: PDModel
    Affects Versions: 2.0.0
            Reporter: Alex Nevidomsky


{code}
byte[] bytes = new byte[(Collections.max(cidToGid.keySet()) + 7) / 8];
...
bytes[cid / 8] |= mask;
{code}

Problem:
[(N+7)/8] is not enough to store N/8 when N=8k (for example, 8).
(N+8)/8 or N/8+1 seem to solve the problem, but not sure about the potential remote consequences.

Test case:
{code}
		PDDocument document = new PDDocument();
		PDPage page = new PDPage(PDRectangle.A4);
		document.addPage(page);
		String dir = "../../resources/";
		PDType0Font font = PDType0Font.load(document, new File(dir + "LiberationSans-Regular.ttf"));
		PDPageContentStream stream = new PDPageContentStream(document, page);
		stream.beginText();
		stream.setFont(font, 12);
		stream.setLeading(12 * 1.2);
		stream.newLineAtOffset(50, 600);
		//This particular Russian letter has been
		//a trouble maker in computer system for decades )
		stream.showText("я");

		stream.endText();
		stream.close();
		document.save("example.pdf");
		document.close();
{code}





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