SixLabors ImageSharp Has Infinite Loop in GIF Decoder When Skipping Malformed Comment Extension Blocks

TRUNG BÌNH 5.3CVE-2025-54575 · GHSA-rxmq-m78w-7wmc · Công bố 30/07/2025 · cập nhật 17/06/2026

Tóm tắt nhanh

CVE-2025-54575 là lỗ hổng mức TRUNG BÌNH (CVSS 5.3) ảnh hưởng SixLabors.ImageSharp.
Xác suất bị khai thác trong 30 ngày tới (EPSS): 0.45%, cao hơn 39.0% các lỗ hổng khác.
Cách xử lý: cập nhật lên 3.1.11, 2.1.11 hoặc mới hơn.

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
SixLabors.ImageSharp NuGet	`≥ 3.0.0, < 3.1.11< 2.1.11`	`3.1.112.1.11`

Mô tả

Impact

A specially crafted GIF file containing a malformed comment extension block (with a missing block terminator) can cause the ImageSharp GIF decoder to enter an infinite loop while attempting to skip the block. This leads to a denial of service. Applications processing untrusted GIF input should upgrade to a patched version.

Patches

The problem has been patched. All users are advised to upgrade to v3.1.11 or v2.1.11.

Workarounds

None.

Mô tả của NVD

ImageSharp is a 2D graphics library. In versions below 2.1.11 and 3.0.0 through 3.1.10, a specially crafted GIF file containing a malformed comment extension block (with a missing block terminator) can cause the ImageSharp GIF decoder to enter an infinite loop while attempting to skip the block. This leads to a denial of service. Applications processing untrusted GIF input should upgrade to a patched version. This issue is fixed in versions 2.1.11 and 3.1.11.