CyberRota Analysis
AI-GeneratedThe CImg Library's `_load_analyze()` function is vulnerable to a memory allocation issue due to improper handling of the header_size field from Analyze/NIfTI files, allowing for excessive memory allocation of up to ~1.3 GB when processing malformed files. This can lead to memory leaks and potential denial of service, as the allocated buffers are not freed on error. Developers and organizations using versions prior to 4.0.0 should prioritize upgrading to mitigate this high-severity vulnerability.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
CImg Library is a C++ library for image processing. Prior to version 4.0.0 in `_load_analyze()`, the header_size field is read as an `unsigned int` from the first 4 bytes of an Analyze/NIfTI file and passed directly to `new unsigned char[header_size]` without being bounded against the actual file size. A value up to ~4 GB is accepted. If the subsequent `fread` returns `short` as it will for any malformed file), the function throws a `CImgIOException` and the allocated buffer is never freed. A 6-byte crafted file is sufficient to trigger an allocation of ~1.3 GB per call, with the full allocation leaked on every error path. The issue is reachable via `load_analyze()` and the generic `load()` when the file extension is .hdr, .img, or .nii. Version 4.0.0 fixes the issue.