SixLabors
File (detected as bmp) fails to open, consumes a lot of memory
Prerequisites
- [X] I have written a descriptive issue title
- [X] I have verified that I am running the latest version of ImageSharp
- [X] I have verified if the problem exist in both
DEBUGandRELEASEmode - [X] I have searched open and closed issues to ensure it has not already been reported
ImageSharp version
3.1.3
Other ImageSharp packages and versions
N/A
Environment (Operating system, version and so on)
Windows 11
.NET Framework version
.net 8
Description
The attached (zipped) file, 126 bytes long, gives an out-of-memory error when I try to open it with the following code:
using FileStream stream = File.OpenRead("00271-imageworsener-leftshift");
SixLabors.ImageSharp.Image.Load(stream);
I believe there is a problem with the image dimensions - BmpDecoderCore.ReadImageHeaders sets this.infoHeader.Width and this.infoHeader.Height to very high values which tries to create a huge image in BmpDecoderCore.Decode().
Steps to Reproduce
See description.
Images
00271-imageworsener-leftshift.zip
Can you please re-upload the zip file. GitHub is showing varnish cache errors when I try to download it.
Our testers reported this, and it turns out the file is from a test set used to test ImageMagick - https://github.com/rip1s/Fuzzing-ImageMagick