| Título | Assimp commit 17c12da Heap-based Buffer Overflow |
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| Descrição | A heap-based buffer over-read vulnerability exists in Assimp Library's LWS/LWO animation parsing module within the Assimp::LWO::AnimResolver::UpdateAnimRangeSetup function atLWOAnimation.cpp:227. The flaw is caused by insufficient boundary checks for vector iterators during animation key frame traversal. When processing a maliciously crafted malformed LWS or LWO animation file, the program executes a loop that only terminates based on a custom iterator comparison it2 != n, without verifying whether the iterator exceeds the valid range of the std::vector<Assimp::LWO::Key> container. An invalid overrun iterator can make the loop continue traversing beyond the vector’s allocated heap memory boundary. This triggers an 8-byte out-of-bounds heap memory read when accessing animation key data at line 227, corrupting memory and causing program crash during model animation parsing. Remote attackers can exploit this vulnerability by supplying a specially malformed LWS/LWO model file. Successful exploitation can trigger denial-of-service (DoS) attacks via program crash, and may lead to sensitive memory information disclosure due to invalid out-of-bounds memory access. |
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| Fonte | ⚠️ https://github.com/assimp/assimp/issues/6621 |
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| Utilizador | TYGLS (UID 94774) |
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| Submissão | 01/06/2026 08h13 (há 1 mês) |
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| Moderação | 03/07/2026 15h44 (1 month later) |
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| Estado | Duplicado |
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| Entrada VulDB | 303104 [Open Asset Import Library Assimp 5.4.3 LWO File LWOAnimation.cpp UpdateAnimRangeSetup Excesso de tampão] |
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| Pontos | 0 |
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