Security advisory

{
  "id": "01bef752316bbf3f7810815fafce41d3a48ab8c90929127c85e17344f98d23e9",
  "url": "https://osv.dev/vulnerability/CVE-2018-12437",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-12437",
    "summary": "LibTomCrypt through 1.18.1 allows a memory-cache side-channel attack on ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.",
    "evidence": "osv:CVE-2018-12437",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2018-12437",
      "aliases": [
        "CVE-2018-12437"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/libtom/libtomcrypt",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "e08fd8630f9d9771226466877064055ee7e863d0"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:libtom:libtomcrypt:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "1.18.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.18.1",
            "v1.18.0",
            "1.17",
            "1.16",
            "1.15",
            "1.14",
            "1.13",
            "1.12",
            "1.11",
            "1.10",
            "1.09",
            "1.08",
            "1.07",
            "1.06",
            "1.05",
            "1.04",
            "1.03",
            "1.02",
            "1.01",
            "1.00",
            "0.99",
            "0.98",
            "0.97b",
            "0.97a",
            "0.97",
            "0.96",
            "0.95",
            "0.94",
            "0.93",
            "0.92",
            "0.91",
            "0.90",
            "0.89",
            "0.88",
            "0.87",
            "0.86",
            "0.85",
            "0.84",
            "0.83",
            "0.82",
            "0.81",
            "0.80",
            "0.79",
            "0.78",
            "0.77",
            "0.76",
            "0.75"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-12437.json"
          }
        }
      ],
      "modified": "2026-10-24T10:31:03.606777515Z",
      "provider": "osv",
      "references": [
        "https://security.gentoo.org/glsa/202007-53",
        "https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:trustedfirmware:op-tee:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "trustedfirmware:op-tee",
            "extracted_events": [
              {
                "range": [
                  {
                    "last_affected": "3.5.0"
                  }
                ],
                "source": "CPE_RANGE"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2018-12437",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 440300,
  "published_at": "2018-06-15T02:29:00.487+00:00"
}