Description
A vulnerability classified as critical was found in Open Asset Import Library Assimp up to 5.4.3. Affected by this vulnerability is the function read_meshes in the library assimp/code/AssetLib/MDL/HalfLife/HL1MDLLoader.cpp. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. The project decided to collect all Fuzzer bugs in a main-issue to address them in the future.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Open Asset Import Library | Assimp | 5.4.0, 5.4.1, 5.4.2, 5.4.3 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | assimp | No fix yet | — |
| Debian 13 | assimp | No fix yet | — |
| Debian 12 | assimp | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | assimp | No fix yet | — |
| Ubuntu 26.04 LTS | assimp | No fix yet | — |
| Ubuntu 25.10 | assimp | No fix yet | — |
| Ubuntu 24.04 LTS | assimp | No fix yet | — |
| Ubuntu 22.04 LTS | assimp | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | assimp | No fix yet | — |
| Ubuntu 18.04 LTS | assimp | No fix yet | — |
| Ubuntu 16.04 LTS | assimp | No fix yet | — |
References
- VDB-312589 | Open Asset Import Library Assimp HL1MDLLoader.cpp read_meshes heap-based overflow vdb-entry technical-description
- VDB-312589 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- Submit #591235 | Open Asset Import Library Assimp 5.4.3 Heap-based Buffer Overflow third-party-advisory
- https://github.com/assimp/assimp/issues/6220 issue-tracking
- https://github.com/assimp/assimp/issues/6220#issuecomment-2945018579 issue-tracking
- https://github.com/user-attachments/files/20605340/read_meshes_reproduce.tar.gz exploit