ImageSharp: HistogramEqualization uses an unvalidated luminance as an unchecked histogram index

[ Description ]Official description

ImageSharp is a 2D graphics library. From 2.0.0 until 4.1.2, decoding an attacker-supplied 32-bit floating-point TIFF as Image<HalfVector4> and applying HistogramEqualization can produce a non-finite or out-of-range luminance in ColorNumerics.GetBT709Luminance. GrayscaleLevelsRowOperation.Invoke uses the resulting value as an unchecked histogram offset, causing an unsafe out-of-range access and process termination. Adaptive Histogram Equalization and AutoLevel are not affected by this report. This issue is fixed in version 4.1.2.

[ Fixes ]Fixes and patches

• SixLabors.ImageSharp 4.1.2Fixed version · GitHub Advisories · nuget package SixLabors.ImageSharp: upgrade to 4.1.2 or later (affected >= 2.0.0, <= 4.1.1)

[ Packages ]Affected open-source packages

• SixLabors.ImageSharp nugetAffected >= 2.0.0, <= 4.1.1 · fixed in 4.1.2 · GHSA-j3p4-wp97-rph4

[ References ]References

• github.com/SixLabors/ImageSharp/commit/c4c4bf292298c026df470db1a17ff826515fd95d
• github.com/SixLabors/ImageSharp/pull/3187
• github.com/SixLabors/ImageSharp/releases/tag/v4.1.2
• github.com/SixLabors/ImageSharp/security/advisories/GHSA-j3p4-wp97-rph4