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Created attachment 1824555 [details]
Example image

Description of problem:
Converting Sun raster images to png via the convert utility provided by the ImageMagick package comes out with "convert: ImproperImageHeader"


Version-Release number of selected component (if applicable):
ImageMagick (6.9.10.68-5.el7_9).


How reproducible:
Every time with provided example images

Steps to Reproduce:
1.convert foo foo.png

Actual results:
convert: ImproperImageHeader

Additional info:
This error appears with the "foo" image but not with the "bar" image if you use the latest version of ImageMagick (6.9.10.68-5.el7_9).
No error occurs with a version 6.7.8.9-18.el7

It seems that the commit specified in this bug should be applied in order to fix this:
https://github.com/ImageMagick/ImageMagick6/issues/117

Reproduced on ImageMagick-6.9.10.68-3.el7.x86_64 using the clear reproducer in #c0 and ImageMagick-6.9.10.68-6.el7_9.x86_64 corrected the conversion error.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (ImageMagick bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2021:3809