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Heap-based Buffer Overflow

CVE-2025-57803

High
8.8/10

Summary

ImageMagick is free and open-source software used for editing and manipulating digital images. In versions through 6.9.13-27, and 7.0.0-24 through 7.1.2-1 for ImageMagick's 32-bit build, a 32-bit Integer Overflow in the BMP encoders scanline-stride computation collapses `bytes_per_line` (stride) to a tiny value while the per-row writer still emits 3 width bytes for 24-bpp images. The row base pointer advances using the (overflowed) stride, so the first row immediately writes past its slot and into adjacent heap memory with attacker-controlled bytes. This is a classic, powerful primitive for heap corruption in common auto-convert pipelines. This issue affects Magick.NET versions through 14.8.0.

  • LOW
  • NETWORK
  • HIGH
  • UNCHANGED
  • NONE
  • LOW
  • HIGH
  • HIGH

CWE-122 - Heap-based Buffer Overflow

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

References

Advisory Timeline

  • Published