Open
Bug 1225679
Opened 9 years ago
Updated 8 months ago
IE11 and Chrome display some corrupt PNGs that Firefox doesn't
Categories
(Core :: Graphics: ImageLib, defect)
Tracking
()
NEW
Tracking | Status | |
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firefox75 | --- | affected |
People
(Reporter: paulystefan, Unassigned)
References
()
Details
(Keywords: parity-chrome, parity-ie, parity-opera, Whiteboard: gfx-noted)
User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; Trident/7.0; .NET CLR 2.0.50727; SLCC2; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; Tablet PC 2.0; .NET4.0E; rv:11.0) like Gecko Steps to reproduce: ff 38.4 esr Website check: http://www.schaik.com/pngsuite/pngsuite_xxx_png.html and http://www.schaik.com/pngsuite/pngsuite_xxx_gif.html Actual results: ff38.4 esr: None corrupt png showed, all corrupt gif showed ie11: 2 of 14 showed xhdn0g08 - incorrect IHDR checksum showed, xcsn0g01 - incorrect IDAT checksum showed, all corrupt gif showed Expected results: same Level as IE11 or more: 2 of 14 showed or more xhdn0g08 - incorrect IHDR checksum showed, xcsn0g01 - incorrect IDAT checksum showed, all corrupt gif showed: done
Reporter | ||
Updated•9 years ago
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OS: Unspecified → Windows 7
Hardware: Unspecified → x86
Reporter | ||
Updated•9 years ago
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Comment 1•9 years ago
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Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0 20151117030242 http://www.schaik.com/pngsuite/xcsn0g01.png Also shows in Opera 33. ――――― Confirming since other browsers display the images. Since the files are genuinely corrupt, I expect this is Invalid or Wontfix. The only bonafide bug I noticed is that the “The image <url goes here> cannot be displayed because it contains errors.” message fails to consistently show up; sometimes just the image URL shows instead.
Status: UNCONFIRMED → NEW
Component: Untriaged → ImageLib
Ever confirmed: true
Product: Firefox → Core
Summary: IE11 can Show some Pictures of test site for png; ff38.4 esr not → IE11 and Chrome display some corrupt PNGs that Firefox doesn't
Whiteboard: [parity-ie][parity-chrome][parity-opera]
Comment 2•9 years ago
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Also expecting that we won't fix this. Seth, do we have a policy on corrupt images?
Flags: needinfo?(seth)
Whiteboard: [parity-ie][parity-chrome][parity-opera] → [parity-ie][parity-chrome][parity-opera], gfx-noted
Comment 3•9 years ago
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We could turn off the CRC validation. There would be a slight increase in decoding speed, and it would be a huge benefit to fuzzers because they wouldn't have to generate a valid CRC for each PNG chunk variation. I don't recommend doing that.
Comment 4•6 years ago
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Mass bug change to replace various 'parity' whiteboard flags with the new canonical keywords. (See bug 1443764 comment 13.)
Whiteboard: [parity-ie][parity-chrome][parity-opera], gfx-noted → gfx-noted
Comment 5•4 years ago
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Test results for http://www.schaik.com/pngsuite/pngsuite_xxx_png.html in 2020:
Chrome (80.0.3987.122) renders the following corrupt PNGs:
xcsn0g01 - incorrect IDAT checksum
IE (11.1.19041.0) still renders the following corrupt PNGs:
xhdn0g08 - incorrect IHDR checksum
xcsn0g01 - incorrect IDAT checksum
Firefox (75 Nightly) still renders none of the corrupt PNGs.
Updated•4 years ago
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Webcompat Priority: ? → revisit
Updated•2 years ago
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Severity: normal → S3
Updated•2 years ago
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Webcompat Priority: revisit → ---
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Description
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