[PDFBOX-4611] PDF validates despite wrong /Alternate in ICC colorspace

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.16
• Fix Version/s: 2.0.17, 3.0.0 PDFBox
• Component/s: Preflight
• Assignee: Tilman Hausherr
• Reporter: Tilman Hausherr
• Created: 25/Jul/19 16:47
• Updated: 30/Jun/20 06:13
• Resolved: 27/Jul/19 09:41

Description

Attached PDF (related to PDFBOX-4607) validates with despite a flaw: the /Alternate of the ICC colorspace (at Root/Pages/Kids/[0]/Resources/XObject/Im1/ColorSpace/[1]/Alternate) is /DeviceRGB while the colorspace is a grey one and N=1.

Issue Links

• relates to: PDFBOX-4422 PDF with OutputIntent with alternative colorspace with incorrect component count validates
• links to: Alternate in ICC stream dictionary and PDF/A-1b #773