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How CVE-2025-3015 Works
The vulnerability exists in the Open Asset Import Library (Assimp) 5.4.3, specifically in the `Assimp::ASEImporter::BuildUniqueRepresentation` function within ASELoader.cpp. The flaw occurs due to improper handling of the `mIndices` array, leading to an out-of-bounds read when parsing maliciously crafted ASE files. Attackers can exploit this remotely by supplying a specially designed ASE file, triggering memory corruption or information leakage. The issue stems from insufficient bounds checking before accessing array elements, allowing attackers to read adjacent memory regions.
DailyCVE Form
Platform: Assimp
Version: 5.4.3
Vulnerability: Out-of-bounds read
Severity: Critical
Date: 04/17/2025
What Undercode Say:
Exploitation:
- Craft a malicious ASE file with manipulated `mIndices` values.
2. Trigger parsing via `Assimp::Importer::ReadFile()`.
- Exploit OOB read to leak memory or crash the application.
Protection:
1. Upgrade to Assimp 6.0.
2. Apply patch `7c705fde418d68cca4e8eff56be01b2617b0d6fe`.
3. Validate ASE file indices before processing.
Analytics:
- CVSS 4.0: `AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N`
– Attack Vector: Remote - Impact: Memory leakage, DoS
Commands:
Check Assimp version assimp version Patch application git apply 7c705fde418d68cca4e8eff56be01b2617b0d6fe.patch Verify fix grep "mIndices" code/AssetLib/ASE/ASELoader.cpp
Code Fix:
// Patched bounds check
if (index >= mIndices.size()) {
throw DeadlyImportError("Invalid index in ASE file");
}
Detection:
Check for vulnerable versions import assimp print(assimp.<strong>version</strong> in ["5.4.3"])
Mitigation Script:
!/bin/sh wget https://github.com/assimp/assimp/releases/download/v6.0/assimp-6.0.zip unzip assimp-6.0.zip && cd assimp-6.0 cmake . && make install
References:
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
