Security advisory

{
  "id": "25b6cc39d02d0c4ddf18ba7907d45f41ea76bc2b8c17f99b42c7958b5bfe463d",
  "url": "https://osv.dev/vulnerability/CVE-2020-10811",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-10811",
    "summary": "An issue was discovered in HDF5 through 1.12.0. A heap-based buffer over-read exists in the function H5O__layout_decode() located in H5Olayout.c. It allows an attacker to cause Denial of Service.",
    "evidence": "osv:CVE-2020-10811",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2020-10811",
      "aliases": [
        "CVE-2020-10811"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/hdfgroup/hdf5",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "c51aa323fcda89b1f116cdd2c28a8ce0a229e29a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:hdfgroup:hdf5:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "1.12.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "hdf5-1_12_0-initial",
            "hdf5-1_12_0-alpha1",
            "hdf5-1_12_0-alpha0",
            "hdf5_1_12-initial",
            "vms_last_support_trunk",
            "before_removing_mpiposix_vfd",
            "hdf5-1_9-start",
            "hdf5-1_8_0-beta5",
            "hdf5-1_8_0-beta4",
            "hdf5-1_8_0-beta3",
            "hdf5-1_8_0-beta2",
            "hdf5-1_8_0-beta1",
            "hdf5-1_8_0-alpha4",
            "hdf5-1_8_0-alpha3",
            "hdf5-1_8_0-alpha2",
            "before_removing_fphdf5",
            "before_removing_docs",
            "before_removing_tbbt_code",
            "before_signed_unsigned_changes",
            "hdf5-1_6_2",
            "hdf5-1_6_1",
            "hdf5-1_6_0",
            "hdf5-1_4_0",
            "hdf5-1_4_1",
            "hdf5-1_3_1",
            "hdf5-1_3_0",
            "hdf5-1_2_1",
            "hdf5-1_2_0beta",
            "hdf5-1_2_0-beta1-update2",
            "hdf5-1_2_0",
            "hdf5-1_0_1",
            "hdf5-1_0_0",
            "r1_1beta1",
            "hdf5-1_0_0-alpha2",
            "proto1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-10811.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:31.065456334Z",
      "provider": "osv",
      "references": [
        "https://bitbucket.hdfgroup.org/projects/HDFFV/repos/hdf5/browse/release_docs/RELEASE.txt",
        "https://github.com/Loginsoft-Research/hdf5-reports/tree/master/Vuln_2",
        "https://research.loginsoft.com/bugs/heap-buffer-overflow-in-h5olayout-c-hdf5-1-13-0/"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-10811",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 432718,
  "published_at": "2020-03-22T18:15:14.357+00:00"
}