Error in PNG image (WiFi QR Code on AVM Router page)
Categories
(Core :: Graphics: ImageLib, defect)
Tracking
()
People
(Reporter: illuminate7, Unassigned)
Details
Attachments
(2 files)
QR-Code png error on firefox 111 and 112 mozilla-bug1.JPG
User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:112.0) Gecko/20100101 Firefox/112.0
Steps to reproduce:
I loggend into my AVM Fritz Router admin panel and wanted to scan the QR Code for the guest WiFi.
Actual results:
The generated PNG image was totally unreadable as you can see on the file attached.
Expected results:
A clean and readable QR Code image like it was in previous version on FF.
PS: NO THERE WAS NO CHANGE IN THE ROUTER FIRMWARE SINCE 2018 AND IT WORKS IN A BRAVE BROWSER FINE.
I can't post more than one image so I decided to only post the bug but not the correct version (as in my brave browser and on FF older than 110 Version)
The PNG Image is a generated image by the AVm Router. In the source code (at the PNG image) we can see this:
######## START HTML PART #####
<img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAALkAAAC5CAYAAAB0rZ5cAAAFEUlEQVR4Xu3doWrVYRjHcd9iGRbrwDBmc21tsLAL2MJAEAx6F4aBUVhYEkwLA6PJtJMG3oIaxeYlKM7BvISnPr+HT/6X94jHuc/7O9+zvjzaP3714fnPt9/e/9m62N2cbu7Obi+vbzfnT+++P7u+P/j3+oHn/nyS/36snY/ne8kvwBvQG7D6+7uu3jzZ9S+4n2CTf4KvTw+Pfkx+gd7A3sDr/ubwhf+D+x1k8u9g6+/L36eTX6A3sDfw+vxr+4SiUKTJirbePf56PPkFegN7Ay9O7h5gOsNychdh4y8CObmb3vE33ZzclGH8lIOT2+qM3ypxcmO08WM8Tm5tOX5tysnNicfPqTm5vfz4zwtwck7OyatBuuc+UdV9zszJOTkn94EKn3lNnytzck7OyX2gQrUgfa7MyTk5J/eBCnvz9L05J+fknJyDc/DuDl6dj5Nzck7OyTk5J+fM4505nZHtye3J7cnTLwKcX3fFntye3J48/SLA+fXLdVd0V3RXKmj3XP+7OzPrruiu6K6kXwQ4vz45J+fknJwzc+b0uTUn5+ScnDNz5vS5NSfn5Jycg3Pw7g5enY+Tc3JOzpk5sz05Zx7vzOmMrLuiu6K7kn4R4Py6Mboruiu6K+kXAc6vG6O7oruiu1JBu+e6LN2ZWZ9cN2Z8N8aenPOPd35Ozsk5OWfmzOlza07OyTk5Z+bM6XNrTs7JOTkH5+DdHbw6Hyfn5Jw8fTDv/L6HlJNzck7OyTk5J+fM4505nZF1V3RXdFfSLwKcXzdGd0V3RXelgnbPdVm6M609uT25PXl6WMb59dX1yfXJ9cnTLwKcX1+dk3NyTs6ZOXP63JqTc3JOzsE5eHcHr87HyTk5J+fMnDl9bs3JOTkn58yc2Z6cM4935nRG1l3RXdFdSb8IcH7dGN0V3RXdlQraPdc16c7Muiu6K7or6RcBzq8bo0+uGzO+G2NPzvnHOz8n5+ScnDNz5vS5NSfn5Jycg3Pw7g5enY+Tc3JOzpk5c/rcmpNzck6ePph3ft9Dysk5OSfn5Jyck3Pm8c6czsi6K7oruisVtHuuy9KdmXVXdFd0V9IvApxfN8ae3J7cnjw9LOP8+ur65Prk+uTpFwHOr6/OyTk5J+fgHLy7g1fn4+ScnJNzZs6cPlfm5Jyck3Nmzpw+t+bknJyTc2bObE/Omcc7czoj667oruiuVNDuuS5Ld2bWXdFd0V1Jvwhwft0V3RXdFd2V9IsA59eN0SfXjRnfjbEn5/zjnZ+Tc3JOzsE5eHcHr87HyTk5J+fMnDl9bs3JOTkn58ycOX1uzck5OSdPH8w7v+8h5eScnJNzck5eOXT355yck3NyTs7JOTlnHu/M6Yysu6K7oruSfhHg/Lox9uT25Pbk6WEZ59dX1yfXJ9cn7w79zqefXjG3Prk+uT55+kWA8+urc3JOzsk5M2dOnytzck7OyTkzZ06fW3NyTs7JOTSHrhy6+3NOzsk5OWfmzPbknHm8M6czsu6K7oruSvpFgPPrruiu6K7orqRfBDi/bozuiu6K7kp36Hc+XZiKufXJdWPGd2PsyTn/eOfn5Jyck3Nmzpw+t+bknJyTc2bOnD635uScnJNzaA5dOXT355yck3Py9MG88/seUk7OyTk5J+fknJwzj3fmdEbWXdFd0V1Jvwhwft0Y3RXdFd2V7tDvfLowFRPbk9uT25Onh2WcX19dn1yfXJ88/SLA+fXVOTknH+/k/wF+ATLNrktQZAAAAABJRU5ErkJggg==">
######## END THML PART #######
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Comment 4•2 years ago
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The Bugbug bot thinks this bug should belong to the 'Core::Graphics: ImageLib' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.
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Comment 5•2 years ago
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Thanks. The data uri in comment 2 is not a qr code (you can see this by copying it and entering it into the url bar). So Firefox seems to be rendering the page that it has, the question is why Firefox is getting that page and Brave is not.
In about:config do you have any pref starting with privacy.resistFingerprinting set to a non-default value (bold)? That has been a cause of similar issues in the past.
If none of those are flipped could you upload a copy of your about:support?
Hi Timohy,
thank you for your reply.
In deed my FF has fingerprinting disabled.
I changed "privacy.resistFingerprinting" to default and the QR Code is visible again.
Thank you very much. So it is no BUG and we can close this entry??
Best regards
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