| Titel | Assimp commit 17c12da Heap-based Buffer Overflow |
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| Beschreibung | A heap-buffer-overflow vulnerability exists in Assimp's 3DGS MDL7 model bone node parser within the Assimp::MDLImporter::AddBonesToNodeGraph_3DGS_MDL7() function at MDLLoader.cpp:1719. The flaw is caused by uncontrolled loop iteration relying on untrusted file metadata without buffer boundary validation. The program uses the raw bone count value (`pcHeader->bones_num`) directly read from the MDL7 file as the loop upper limit, while the actual heap-allocated `apcBones` bone pointer array has a smaller memory size. When processing a maliciously crafted MDL7 file with an inflated bone count value, the loop continues iterating beyond the valid array range, causing the `apcBones2` pointer to step past the end of the allocated buffer and trigger an out-of-bounds 8-byte heap memory read. This vulnerability leads to memory corruption and program crash, and remote attackers can exploit this flaw via a specially crafted MDL model file to launch denial-of-service (DoS) attacks. |
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| Quelle | ⚠️ https://github.com/assimp/assimp/issues/6632 |
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| Benutzer | TYGLS (UID 94774) |
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| Einreichung | 29.06.2026 14:48 (vor 2 Monaten) |
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| Moderieren | 16.08.2026 09:50 (2 months later) |
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| Status | Akzeptiert |
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| VulDB Eintrag | 391147 [Open Asset Import Library Assimp 17c12da Node Parser MDLLoader.cpp AddBonesToNodeGraph_3DGS_MDL7 bones_num Pufferüberlauf] |
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| Punkte | 20 |
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