| Titre | Assimp commit 17c12da Heap-based Buffer Overflow |
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| Description | A heap-buffer-overflow vulnerability exists in Assimp's Half-Life 1 MDL loader within the `HL1MDLLoader::read_meshes()` function. The flaw is caused by insufficient bone index validation when parsing malformed MDL files. The file header declares a small number of bones (e.g., 1 bone), but the vertex data references an out-of-bounds bone index (e.g., index 5). The code directly accesses the bone array using the unvalidated index without boundary checks, leading to an out-of-bounds heap read, application crash, and potential information disclosure. Remote attackers can exploit this vulnerability via a crafted MDL file to cause a denial-of-service (DoS) condition. |
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| La source | ⚠️ https://github.com/assimp/assimp/issues/6614 |
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| Utilisateur | TYGLS (UID 94774) |
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| Soumission | 07/05/2026 04:47 (il y a 1 mois) |
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| Modérer | 31/05/2026 10:11 (24 days later) |
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| Statut | Accepté |
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| Entrée VulDB | 367508 [Assimp jusqu’à 6.0.4 Half-Life 1 MDL Loader HL1MDLLoader.cpp read_meshes buffer overflow] |
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| Points | 20 |
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