[PDFBOX-4446] Tolerate some incorrect Xref in PDF file

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.14, 3.0.0 PDFBox
• Fix Version/s: 2.0.14, 3.0.0 PDFBox
• Component/s: Parsing
• Assignee: Tilman Hausherr
• Reporter: Derek Liu
• Created: 29/Jan/19 00:47
• Updated: 28/Feb/19 17:44
• Resolved: 03/Feb/19 07:59

Description

Some PDF file may not have correct Xref, and we should tolerate them. Or just log an error but not raise exception.

 pdfbox/src/main/java/org/apache/pdfbox/pdfparser/COSParser.java | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pdfbox/src/main/java/org/apache/pdfbox/pdfparser/COSParser.java b/pdfbox/src/main/java/org/apache/pdfbox/pdfparser/COSParser.java
index 8ca955ed2..b2b28b258 100644
--- a/pdfbox/src/main/java/org/apache/pdfbox/pdfparser/COSParser.java
+++ b/pdfbox/src/main/java/org/apache/pdfbox/pdfparser/COSParser.java
@@ -721,6 +721,9 @@ public class COSParser extends BaseParser
                                     }
                                 }
 
+                                if( fileOffset == null ) {
+                                  continue;
+                                }
                                 List<COSObject> stmObjects = objToBeParsed.get(fileOffset);
                                 if (stmObjects == null)
                                 {