Heap-buffer-overflow in coap_split_uri_sub

{
  "id": "5e8364bf55db6f0b788b5c05ea120beed5d06228ac565aa61e8b9aac9b3a5337",
  "url": "https://osv.dev/vulnerability/OSV-2022-150",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Heap-buffer-overflow in coap_split_uri_sub",
    "summary": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=44611 Crash type: Heap-buffer-overflow READ 1 Crash state: coap_split_uri_sub coap_get_uri_path",
    "evidence": "osv:OSV-2022-150",
    "products": [
      {
        "name": {
          "value": "libcoap",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "v4.3.1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v4.3.1-rc1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v4.3.1-rc2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v4.3.2-rc1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v4.3.2-rc2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v4.3.2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v4.3.3",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v4.3.4",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v4.3.4a",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v4.3.5-rc1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v4.3.5-rc2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v4.3.5-rc3",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v4.3.5",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v4.3.5a",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v4.3.5b",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "OSV-2022-150",
      "aliases": [
        "OSV-2022-150"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/obgm/libcoap.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "6504b667d38012efa81087bf4cc960128f4dc2d4"
                }
              ]
            }
          ],
          "package": {
            "name": "libcoap",
            "purl": "pkg:generic/libcoap",
            "ecosystem": "OSS-Fuzz"
          },
          "versions": [
            "v4.3.1",
            "v4.3.1-rc1",
            "v4.3.1-rc2",
            "v4.3.2-rc1",
            "v4.3.2-rc2",
            "v4.3.2",
            "v4.3.3",
            "v4.3.4",
            "v4.3.4a",
            "v4.3.5-rc1",
            "v4.3.5-rc2",
            "v4.3.5-rc3",
            "v4.3.5",
            "v4.3.5a",
            "v4.3.5b"
          ],
          "database_specific": {
            "source": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libcoap/OSV-2022-150.yaml"
          },
          "ecosystem_specific": {
            "severity": "MEDIUM"
          }
        }
      ],
      "modified": "2026-10-19T14:26:09.532407Z",
      "provider": "osv",
      "references": [
        "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=44611"
      ]
    },
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 374788,
  "published_at": "2022-02-14T00:00:50.308933+00:00"
}