[PDFBOX-4349] ClassCastException in COSParser

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.0.12
• Fix Version/s: 2.0.13, 3.0.0 PDFBox
• Assignee: Andreas Lehmkühler
• Reporter: Robin Schimpf
• Created: 17/Oct/18 19:03
• Updated: 02/Dec/18 17:06
• Resolved: 21/Oct/18 20:20

Description

Fuzzing PDF loading with JQF triggered an ClassCastException.

java.lang.ClassCastException: org.apache.pdfbox.cos.COSInteger cannot be cast to org.apache.pdfbox.cos.COSObject
	at org.apache.pdfbox.pdfparser.COSParser.parseTrailerValuesDynamically(COSParser.java:2841)
	at org.apache.pdfbox.pdfparser.PDFParser.initialParse(PDFParser.java:173)
	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)