Contiki-NG has off-by-one error in Antelope DBMS

{
  "id": "e22f75b5d1931de3b6ab0bb256dcf0c306a742072f1dd8e72601e79b7ab09706",
  "url": "https://osv.dev/vulnerability/CVE-2023-30546",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Contiki-NG has off-by-one error in Antelope DBMS",
    "summary": "Contiki-NG is an operating system for Internet of Things devices. An off-by-one error can be triggered in the Antelope database management system in the Contiki-NG operating system in versions 4.8 and prior. The problem exists in the Contiki File System (CFS) backend for the storage of data (file os/storage/antelope/storage-cfs.c). In the functions `storage_get_index` and `storage_put_index`, a buffer for merging two strings is allocated with one byte less than the maximum size of the merged strings, causing subsequent function calls to the cfs_open function to read from memory beyond the buffer size. The vulnerability has been patched in the \"develop\" branch of Contiki-NG, and is expected to be included in the next release. As a workaround, the problem can be fixed by applying the patch in Contiki-NG pull request #2425.",
    "evidence": "osv:CVE-2023-30546",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2023-30546",
      "aliases": [
        "CVE-2023-30546",
        "GHSA-257g-w39m-5jj4"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/contiki-ng/contiki-ng",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "9771e9aaebbfbb5633ce69eb9876e0fc70bbcd6f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "4.8"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  }
                ]
              }
            }
          ],
          "versions": [
            "release/v4.8",
            "release/v4.7",
            "release/v4.6",
            "release/v4.5",
            "release/v4.4",
            "release/v4.3",
            "release/v4.2",
            "release/v4.1",
            "release/v4.0",
            "develop/v4.0",
            "fork",
            "develop/v3.x-fork",
            "old/v2.6",
            "2.6-rc0",
            "2.6",
            "2.5-release",
            "old/v2.4",
            "2.4",
            "old/v2.3",
            "2.3",
            "old/v2.2.3",
            "2.2.3",
            "old/v2.2.2",
            "2.2.2",
            "old/v2.2.1",
            "2.2.1",
            "old/v2.2",
            "2.2",
            "old/v2.1",
            "2.1",
            "old/v2.0",
            "2.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-30546.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:29.287128990Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/30xxx/CVE-2023-30546.json",
        "https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-257g-w39m-5jj4",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-30546",
        "https://github.com/contiki-ng/contiki-ng/pull/2425"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-125",
          "CWE-193"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/30xxx/CVE-2023-30546.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-30546",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 496132,
  "published_at": "2023-04-26T18:14:46.436+00:00"
}