ImageSharp is a managed, cross-platform, 2D graphics library. A heap-use-after-free flaw was found in ImageSharps InitializeImage() function of PngDecoderCore.cs file. This vulnerability is triggered when an attacker passes a specially crafted PNG image file to ImageSharp for conversion, potentially leading to information disclosure. This issue has been patched in versions 3.1.3 and 2.1.7.
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Imagesharp | Sixlabors | * | 2.1.7 (excluding) |
| Imagesharp | Sixlabors | 3.1.0 (including) | 3.1.3 (excluding) |