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Posted to dev@pdfbox.apache.org by "ASF subversion and git services (JIRA)" <ji...@apache.org> on 2019/01/31 07:37:00 UTC
[jira] [Commented] (PDFBOX-4452) ClassCastException in PDPageTree
[ https://issues.apache.org/jira/browse/PDFBOX-4452?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16756971#comment-16756971 ]
ASF subversion and git services commented on PDFBOX-4452:
---------------------------------------------------------
Commit 1852574 from Tilman Hausherr in branch 'pdfbox/branches/2.0'
[ https://svn.apache.org/r1852574 ]
PDFBOX-4452: avoid ClassCastException
> ClassCastException in PDPageTree
> --------------------------------
>
> Key: PDFBOX-4452
> URL: https://issues.apache.org/jira/browse/PDFBOX-4452
> Project: PDFBox
> Issue Type: Bug
> Affects Versions: 2.0.13
> Reporter: Robin Schimpf
> Priority: Minor
> Attachments: ClassCastException COSInteger instead of COSDictionary, ClassCastException COSString instead of COSDictionary
>
>
> Fuzzing PDF merging with JQF triggered an ClassCastException. The attached file is merged with itself.
> {code:java}
> java.lang.ClassCastException: org.apache.pdfbox.cos.COSInteger cannot be cast to org.apache.pdfbox.cos.COSDictionary
> at org.apache.pdfbox.pdmodel.PDPageTree.getKids(PDPageTree.java:144)
> at org.apache.pdfbox.pdmodel.PDPageTree.access$200(PDPageTree.java:38)
> at org.apache.pdfbox.pdmodel.PDPageTree$PageIterator.enqueueKids(PDPageTree.java:166)
> at org.apache.pdfbox.pdmodel.PDPageTree$PageIterator.<init>(PDPageTree.java:159)
> at org.apache.pdfbox.pdmodel.PDPageTree$PageIterator.<init>(PDPageTree.java:153)
> at org.apache.pdfbox.pdmodel.PDPageTree.iterator(PDPageTree.java:123)
> at org.apache.pdfbox.multipdf.PDFMergerUtility.appendDocument(PDFMergerUtility.java:737)
> at org.apache.pdfbox.multipdf.PDFMergerUtility.legacyMergeDocuments(PDFMergerUtility.java:390)
> at org.apache.pdfbox.multipdf.PDFMergerUtility.mergeDocuments(PDFMergerUtility.java:276)
> ...
> {code}
> The Code used for fuzzing is
> {code:java}
> try (OutputStream out = new ByteArrayOutputStream()) {
> PDFMergerUtility pdfMergerUtility = new PDFMergerUtility();
> pdfMergerUtility.addSource(file);
> pdfMergerUtility.addSource(file);
> pdfMergerUtility.setDestinationStream(out);
> pdfMergerUtility.mergeDocuments(MemoryUsageSetting.setupMainMemoryOnly());
> }
> {code}
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