{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-59729",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-06T16:25:07.013593Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-06T16:28:37.534Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://git.ffmpeg.org/ffmpeg.git",
          "defaultStatus": "unaffected",
          "modules": [
            "get_duration"
          ],
          "packageName": "DHAV",
          "product": "FFmpeg",
          "repo": "https://git.ffmpeg.org/ffmpeg.git",
          "vendor": "FFmpeg",
          "versions": [
            {
              "lessThan": "8.0",
              "status": "affected",
              "version": "a218cafe4d3be005ab0c61130f90db4d21afb5db",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Google Big Sleep"
        }
      ],
      "datePublic": "2025-07-21T22:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003e\u003c/p\u003e\u003cp\u003eWhen parsing the header for a DHAV file, there\u0027s an integer underflow in offset calculation that leads to reading the duration from before the start of the allocated buffer.\u003c/p\u003e\u003cp\u003eIf we load a DHAV file that is larger than \u003ccode\u003eMAX_DURATION_BUFFER_SIZE\u003c/code\u003e\u0026nbsp;bytes (\u003ccode\u003e0x100000\u003c/code\u003e) for example 0x101000 bytes, then at [0] we have \u003ccode\u003esize = 0x101000\u003c/code\u003e. At [1] we have \u003ccode\u003eend_buffer_size = 0x100000\u003c/code\u003e, and at [2] we have \u003ccode\u003eend_buffer_pos = 0x1000\u003c/code\u003e.\u003c/p\u003e\u003cp\u003eThe loop then scans backwards through the buffer looking for the \u003ccode\u003edhav\u003c/code\u003e\u0026nbsp;tag; when it is found, we\u0027ll calculate \u003ccode\u003eend_pos\u003c/code\u003e\u0026nbsp;based on a 32-bit offset read from the buffer.\u003c/p\u003e\u003cp\u003eThere is subsequently a check [3] that \u003ccode\u003eend_pos\u003c/code\u003e\u0026nbsp;is within the section of the file that has been copied into \u003ccode\u003eend_buffer\u003c/code\u003e, but it only correctly handles the cases where \u003ccode\u003eend_pos\u003c/code\u003e\u0026nbsp;is \u003cem\u003ebefore the start of the file\u003c/em\u003e\u0026nbsp;or \u003cem\u003eafter the section copied into \u003ccode\u003eend_buffer\u003c/code\u003e\u003c/em\u003e, and not the case where \u003ccode\u003eend_pos\u003c/code\u003e\u0026nbsp;is within the the file, but before the section copied into \u003ccode\u003eend_buffer\u003c/code\u003e. If we provide such an offset, \u003ccode\u003e(end_pos - end_buffer_pos)\u003c/code\u003e\u0026nbsp;can underflow, resulting in the subsequent access at [4] occurring before the beginning of the allocation.\u003c/p\u003eWe recommend upgrading to version 8.0 or beyond.\u003cp\u003e\u003c/p\u003e\u003cbr\u003e"
            }
          ],
          "value": "When parsing the header for a DHAV file, there\u0027s an integer underflow in offset calculation that leads to reading the duration from before the start of the allocated buffer.\n\nIf we load a DHAV file that is larger than MAX_DURATION_BUFFER_SIZE\u00a0bytes (0x100000) for example 0x101000 bytes, then at [0] we have size = 0x101000. At [1] we have end_buffer_size = 0x100000, and at [2] we have end_buffer_pos = 0x1000.\n\nThe loop then scans backwards through the buffer looking for the dhav\u00a0tag; when it is found, we\u0027ll calculate end_pos\u00a0based on a 32-bit offset read from the buffer.\n\nThere is subsequently a check [3] that end_pos\u00a0is within the section of the file that has been copied into end_buffer, but it only correctly handles the cases where end_pos\u00a0is before the start of the file\u00a0or after the section copied into end_buffer, and not the case where end_pos\u00a0is within the the file, but before the section copied into end_buffer. If we provide such an offset, (end_pos - end_buffer_pos)\u00a0can underflow, resulting in the subsequent access at [4] occurring before the beginning of the allocation.\n\nWe recommend upgrading to version 8.0 or beyond."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-100",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-100 Overflow Buffers"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "HIGH",
            "attackRequirements": "PRESENT",
            "attackVector": "ADJACENT",
            "baseScore": 5.7,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "HIGH",
            "userInteraction": "PASSIVE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:A/AC:H/AT:P/PR:L/UI:P/VC:L/VI:H/VA:N/SC:L/SI:H/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787 Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-06T08:08:46.060Z",
        "orgId": "14ed7db2-1595-443d-9d34-6215bf890778",
        "shortName": "Google"
      },
      "references": [
        {
          "url": "https://issuetracker.google.com/433513232"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Heap-buffer-overflow read in FFmpeg DHAV get_duration",
      "x_generator": {
        "engine": "Vulnogram 0.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "14ed7db2-1595-443d-9d34-6215bf890778",
    "assignerShortName": "Google",
    "cveId": "CVE-2025-59729",
    "datePublished": "2025-10-06T08:08:46.060Z",
    "dateReserved": "2025-09-19T08:11:37.549Z",
    "dateUpdated": "2025-10-06T16:28:37.534Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}