Security advisory

{
  "id": "0129c17568404f4ca19baaff9c73adc0f7af716a2fdd38bb370ddf3ef78f9f64",
  "url": "https://osv.dev/vulnerability/CVE-2023-31438",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2023-31438",
    "summary": "An issue was discovered in systemd 253. An attacker can truncate a sealed log file and then resume log sealing such that checking the integrity shows no error, despite modifications. NOTE: the vendor reportedly sent \"a reply denying that any of the finding was a security vulnerability.\"",
    "evidence": "osv:CVE-2023-31438",
    "products": [],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2023-31438",
      "aliases": [
        "CVE-2023-31438"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/systemd/systemd",
              "type": "GIT",
              "events": [
                {
                  "introduced": "477fdc5afed0457c43d01f3d7ace7209f81d3995"
                },
                {
                  "last_affected": "477fdc5afed0457c43d01f3d7ace7209f81d3995"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:systemd_project:systemd:253:-:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "253-NA"
                      },
                      {
                        "last_affected": "253-NA"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "253-NA",
            "v253"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-31438.json"
          }
        },
        {
          "ranges": [
            {
              "repo": "https://github.com/systemd/systemd-stable",
              "type": "GIT",
              "events": [
                {
                  "introduced": "477fdc5afed0457c43d01f3d7ace7209f81d3995"
                },
                {
                  "last_affected": "477fdc5afed0457c43d01f3d7ace7209f81d3995"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:systemd_project:systemd:253:-:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "253-NA"
                      },
                      {
                        "last_affected": "253-NA"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "253-NA",
            "v253"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-31438.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:41.114729202Z",
      "provider": "osv",
      "references": [
        "https://github.com/kastel-security/Journald/blob/main/journald-publication.pdf",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/31xxx/CVE-2023-31438.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-31438",
        "https://github.com/systemd/systemd/pull/28886",
        "https://github.com/kastel-security/Journald",
        "https://github.com/systemd/systemd/releases"
      ],
      "provider_metadata": {
        "isDisputed": true,
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/31xxx/CVE-2023-31438.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-31438",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 509084,
  "published_at": "2023-06-13T00:00:00+00:00"
}