Security advisory

{
  "id": "613253ead580a65193338336057cd331969d0237931f3d6330138c410c84b402",
  "url": "https://osv.dev/vulnerability/CVE-2023-51767",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2023-51767",
    "summary": "OpenSSH through 10.0, when common types of DRAM are used, might allow row hammer attacks (for authentication bypass) because the integer value of authenticated in mm_answer_authpassword does not resist flips of a single bit. NOTE: this is applicable to a certain threat model of attacker-victim co-location in which the attacker has user privileges. NOTE: this is disputed by the Supplier, who states \"we do not consider it to be the application's responsibility to defend against platform architectural weaknesses.\"",
    "evidence": "osv:CVE-2023-51767",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2023-51767",
      "aliases": [
        "CVE-2023-51767"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/openssh/openssh-portable",
              "type": "GIT",
              "events": [
                {
                  "introduced": "fd0fa130ecf06d7d092932adcd5d77f1549bfc8d"
                },
                {
                  "last_affected": "94eb6858efecc1b4f02d8a6bd35e149f55c814c8"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "8.0"
                      },
                      {
                        "last_affected": "8.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "9.0"
                      },
                      {
                        "last_affected": "9.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "8.0",
            "9.0",
            "V_9_0_P1",
            "V_8_9_P1",
            "V_8_8_P1",
            "V_8_7_P1",
            "V_8_6_P1",
            "V_8_5_P1",
            "V_8_4_P1",
            "V_8_2_P1",
            "V_8_1_P1",
            "V_8_0_P1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-51767.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:51.308819943Z",
      "provider": "osv",
      "references": [
        "https://access.redhat.com/security/cve/CVE-2023-51767",
        "https://arxiv.org/abs/2309.02545",
        "https://cert-portal.siemens.com/productcert/html/ssa-794697.html",
        "https://github.com/openssh/openssh-portable/blob/8241b9c0529228b4b86d88b1a6076fb9f97e4a99/auth-passwd.c#L77",
        "https://github.com/openssh/openssh-portable/blob/8241b9c0529228b4b86d88b1a6076fb9f97e4a99/monitor.c#L878",
        "https://ubuntu.com/security/CVE-2023-51767",
        "https://www.openwall.com/lists/oss-security/2025/09/22/1",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/51xxx/CVE-2023-51767.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-51767",
        "https://security.netapp.com/advisory/ntap-20240125-0006/",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2255850"
      ],
      "provider_metadata": {
        "isDisputed": true,
        "cna_assigner": "mitre",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "last_affected": "10.0"
                  }
                ],
                "source": "DESCRIPTION"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/51xxx/CVE-2023-51767.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-51767",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 519765,
  "published_at": "2023-12-24T00:00:00+00:00"
}