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  1. PDFBox
  2. PDFBOX-4333

ClassCastException when loading PDF

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: 2.0.12
    • Fix Version/s: 2.0.13, 3.0.0 PDFBox
    • Component/s: Parsing
    • Labels:
      None

      Description

      Fuzzing PDF loading with JQF triggered a ClassCastException. All attached files trigger the exception for a different class but are basically the same.

      org.apache.pdfbox.cos.COSArray cannot be cast to org.apache.pdfbox.cos.COSObject
      java.lang.ClassCastException: org.apache.pdfbox.cos.COSArray cannot be cast to org.apache.pdfbox.cos.COSObject
          at org.apache.pdfbox.pdfparser.COSParser.checkPagesDictionary(COSParser.java:2337)
          at org.apache.pdfbox.pdfparser.COSParser.checkPages(COSParser.java:2321)
          at org.apache.pdfbox.pdfparser.PDFParser.initialParse(PDFParser.java:193)
          at org.apache.pdfbox.pdfparser.PDFParser.parse(PDFParser.java:220)
          at org.apache.pdfbox.pdmodel.PDDocument.load(PDDocument.java:1160)
          at org.apache.pdfbox.pdmodel.PDDocument.load(PDDocument.java:1057)
          ...
      
      

      The Code used for fuzzing is

      PDDocument.load(inputStream)
      

      Throwing an Exception is ok since no other PDF reader I tried is able to load the files. But it should not be an ClassCastException.

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            • Assignee:
              tilman Tilman Hausherr
              Reporter:
              rschimpf Robin Schimpf

              Dates

              • Created:
                Updated:
                Resolved:

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