Vulnerability-Lookup

PYSEC-2025-171

Vulnerability from pysec - Published: 2025-04-14 03:15 - Updated: 2026-05-21 14:54

Details

A vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. Affected is the function Assimp::MD3Importer::ValidateSurfaceHeaderOffsets of the file code/AssetLib/MD3/MD3Loader.cpp of the component File Handler. The manipulation leads to heap-based buffer overflow. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used.

Severity

3.3 (Low)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Impacted products

Name	purl
pyassimp	pkg:pypi/pyassimp

Aliases

CVE-2025-3549

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {},
      "package": {
        "ecosystem": "PyPI",
        "name": "pyassimp",
        "purl": "pkg:pypi/pyassimp"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "5.4.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.1",
        "3.3",
        "4.1.1",
        "4.1.2",
        "4.1.3",
        "4.1.4",
        "5.2.5"
      ]
    }
  ],
  "aliases": [
    "CVE-2025-3549"
  ],
  "details": "A vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. Affected is the function Assimp::MD3Importer::ValidateSurfaceHeaderOffsets of the file code/AssetLib/MD3/MD3Loader.cpp of the component File Handler. The manipulation leads to heap-based buffer overflow. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used.",
  "id": "PYSEC-2025-171",
  "modified": "2026-05-21T14:54:39.562156Z",
  "published": "2025-04-14T03:15:16.823Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://vuldb.com/?id.304590"
    },
    {
      "type": "ADVISORY",
      "url": "https://vuldb.com/?submit.546414"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/assimp/assimp/issues/6070"
    },
    {
      "type": "REPORT",
      "url": "https://vuldb.com/?ctiid.304590"
    },
    {
      "type": "EVIDENCE",
      "url": "https://github.com/user-attachments/files/19580481/Assimp_MD3Importer_ValidateSurfaceHeaderOffsets-hbo.zip"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-3549 (GCVE-0-2025-3549)

Vulnerability from cvelistv5 – Published: 2025-04-14 03:00 – Updated: 2025-07-23 09:01

Title

Open Asset Import Library Assimp File MD3Loader.cpp ValidateSurfaceHeaderOffsets heap-based overflow

Summary

Severity

4.8 (Medium)


                        
                          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

5.3 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

5.3 (Medium)


                        
                          CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

CWE

CWE-122 - Heap-based Buffer Overflow
CWE-119 - Memory Corruption

Assigner

VulDB

References

5 references

URL	Tags
https://vuldb.com/?id.304590	vdb-entrytechnical-description
https://vuldb.com/?ctiid.304590	signaturepermissions-required
https://vuldb.com/?submit.546414	third-party-advisory
https://github.com/assimp/assimp/issues/6070	issue-tracking
https://github.com/user-attachments/files/1958048…	exploit

Impacted products

1 product

Vendor	Product	Version
Open Asset Import Library	Assimp	Affected: 5.4.3

Credits

Chen Lihai

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-3549",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-14T14:41:34.140140Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-14T14:51:11.154Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "modules": [
            "File Handler"
          ],
          "product": "Assimp",
          "vendor": "Open Asset Import Library",
          "versions": [
            {
              "status": "affected",
              "version": "5.4.3"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Chen Lihai"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. Affected is the function Assimp::MD3Importer::ValidateSurfaceHeaderOffsets of the file code/AssetLib/MD3/MD3Loader.cpp of the component File Handler. The manipulation leads to heap-based buffer overflow. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used."
        },
        {
          "lang": "de",
          "value": "Es wurde eine Schwachstelle in Open Asset Import Library Assimp 5.4.3 gefunden. Sie wurde als kritisch eingestuft. Es betrifft die Funktion Assimp::MD3Importer::ValidateSurfaceHeaderOffsets der Datei code/AssetLib/MD3/MD3Loader.cpp der Komponente File Handler. Dank der Manipulation mit unbekannten Daten kann eine heap-based buffer overflow-Schwachstelle ausgenutzt werden. Der Angriff hat dabei lokal zu erfolgen. Der Exploit steht zur \u00f6ffentlichen Verf\u00fcgung."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 4.8,
            "baseSeverity": "MEDIUM",
            "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",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 4.3,
            "vectorString": "AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-122",
              "description": "Heap-based Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-119",
              "description": "Memory Corruption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-23T09:01:29.860Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-304590 | Open Asset Import Library Assimp File MD3Loader.cpp ValidateSurfaceHeaderOffsets heap-based overflow",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/?id.304590"
        },
        {
          "name": "VDB-304590 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/?ctiid.304590"
        },
        {
          "name": "Submit #546414 | Open Asset Import Library Assimp 5.4.3 Heap-based Buffer Overflow",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/?submit.546414"
        },
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/assimp/assimp/issues/6070"
        },
        {
          "tags": [
            "exploit"
          ],
          "url": "https://github.com/user-attachments/files/19580481/Assimp_MD3Importer_ValidateSurfaceHeaderOffsets-hbo.zip"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2025-04-13T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2025-04-13T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2025-07-23T11:03:32.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "Open Asset Import Library Assimp File MD3Loader.cpp ValidateSurfaceHeaderOffsets heap-based overflow"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2025-3549",
    "datePublished": "2025-04-14T03:00:08.855Z",
    "dateReserved": "2025-04-13T17:47:14.206Z",
    "dateUpdated": "2025-07-23T09:01:29.860Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

PYSEC-2025-171

CVE-2025-3549 (GCVE-0-2025-3549)

Tags

Sightings

Nomenclature