Bug 688627

Summary:	Validate declared type, subtype, and length parameters of PDF fonts.
Product:	Ghostscript	Reporter:	Alex Cherepanov <alex>
Component:	PDF Interpreter	Assignee:	Alex Cherepanov <alex>
Status:	RESOLVED WONTFIX
Severity:	normal	CC:	christinedelight.top85
Priority:	P3
Version:	master
Hardware:	All
OS:	All
Customer:		Word Size:	---

Description Alex Cherepanov 2006-04-01 07:06:49 UTC

The fix for the bug 688465 enables Ghostscript to interpret many kinds of
malformed font streams but reduces it's utility as a verification tool.

This bug records the requiriment to add the validation of
the declared type, subtype, and length parameters vs. actual values
in PDF font streams.

Comment 1 Alex Cherepanov 2011-06-28 01:39:45 UTC

No gs user has ever complained that gs accepts some malformed PDF files.
Extra validation code will bring no benefits for most of gs users, but it
will slow the PDF interpreter down for everybody.