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https://issues.apache.org/jira/browse/PDFBOX-4354?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16659233#comment-16659233
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Robin Schimpf commented on PDFBOX-4354:
---------------------------------------
Thanks for the fix!
> NumberFormatException in COSParser
> ----------------------------------
>
> Key: PDFBOX-4354
> URL: https://issues.apache.org/jira/browse/PDFBOX-4354
> Project: PDFBox
> Issue Type: Bug
> Affects Versions: 2.0.12
> Reporter: Robin Schimpf
> Assignee: Andreas Lehmkühler
> Priority: Minor
> Fix For: 2.0.13, 3.0.0 PDFBox
>
> Attachments: NumberFormatException COSParser#bfSearchForObjStreams,
> NumberFormatException COSParser#parseXrefTable
>
>
> Fuzzing PDF loading with [JQF|https://github.com/rohanpadhye/jqf] triggered
> two NumberFormatExceptions in different places.
> First exception:
> {code:java}
> java.lang.NumberFormatException: For input string: "1f"
> at
> java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
> at java.lang.Long.parseLong(Long.java:589)
> at java.lang.Long.parseLong(Long.java:631)
> at
> org.apache.pdfbox.pdfparser.COSParser.bfSearchForObjStreams(COSParser.java:2052)
> at
> org.apache.pdfbox.pdfparser.COSParser.retrieveTrailer(COSParser.java:287)
> at
> org.apache.pdfbox.pdfparser.PDFParser.initialParse(PDFParser.java:171)
> 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}
> Second exception:
> {code:java}
> java.lang.NumberFormatException: For input string: "am"
> at
> java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
> at java.lang.Integer.parseInt(Integer.java:580)
> at java.lang.Integer.parseInt(Integer.java:615)
> at
> org.apache.pdfbox.pdfparser.COSParser.parseXrefTable(COSParser.java:2696)
> at org.apache.pdfbox.pdfparser.COSParser.parseXref(COSParser.java:326)
> at
> org.apache.pdfbox.pdfparser.COSParser.retrieveTrailer(COSParser.java:254)
> at
> org.apache.pdfbox.pdfparser.PDFParser.initialParse(PDFParser.java:171)
> 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}
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