Robin Schimpf created PDFBOX-4333:
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Summary: ClassCastException when loading PDF
Key: PDFBOX-4333
URL: https://issues.apache.org/jira/browse/PDFBOX-4333
Project: PDFBox
Issue Type: Bug
Affects Versions: 2.0.12
Reporter: Robin Schimpf
Attachments: ClassCastException COSArray instead of COSObject,
ClassCastException COSBoolean instead of COSObject, ClassCastException COSFloat
instead of COSObject, ClassCastException COSInteger instead of COSObject,
ClassCastException COSName instead of COSObject, ClassCastException COSNull
instead of COSObject, ClassCastException COSString instead of COSObject
Fuzzing PDF loading with [JQF|https://github.com/rohanpadhye/jqf] triggered a
ClassCastException. All attached files trigger the exception for a different
class but are basically the same.
{code:java}
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)
...
{code}
The Code used for fuzzing is
{code:java}
PDDocument.load(inputStream)
{code}
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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