Security advisory

{
  "id": "4d6f76b426f5e8321e1e1b6ce0393993b09a84d2a91936d98115ad1f5b3f771a",
  "url": "https://osv.dev/vulnerability/CVE-2020-13845",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-13845",
    "summary": "Sylabs Singularity 3.0 through 3.5 has Improper Validation of an Integrity Check Value. Image integrity is not validated when an ECL policy is enforced. The fingerprint required by the ECL is compared against the signature object descriptor(s) in the SIF file, rather than to a cryptographically validated signature.",
    "evidence": "osv:CVE-2020-13845",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-13845",
      "aliases": [
        "CVE-2020-13845",
        "GHSA-pmfr-63c2-jr5c"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/apptainer/singularity",
              "type": "GIT",
              "events": [
                {
                  "introduced": "b5858633cb758b066121a4fcf6d004ae8969ad83"
                },
                {
                  "last_affected": "f1c48e1de6f2596f4d318ed64e4c65a53771b5af"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:sylabs:singularity:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.0.0"
                      },
                      {
                        "last_affected": "3.5.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v3.5.0",
            "v3.5.0-rc.2",
            "v3.5.0-rc.1",
            "v3.4.0-rc.1",
            "v3.3.0-rc.1",
            "v3.2.0-rc1",
            "v3.1.0",
            "v3.1.0-rc4",
            "v3.1.0-rc3",
            "v3.1.0-rc2",
            "v3.1.0-rc1",
            "v3.0.1",
            "v3.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-13845.json"
          }
        },
        {
          "ranges": [
            {
              "repo": "https://github.com/sylabs/singularity",
              "type": "GIT",
              "events": [
                {
                  "introduced": "b5858633cb758b066121a4fcf6d004ae8969ad83"
                },
                {
                  "last_affected": "f1c48e1de6f2596f4d318ed64e4c65a53771b5af"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:sylabs:singularity:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.0.0"
                      },
                      {
                        "last_affected": "3.5.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v3.5.0",
            "v3.5.0-rc.2",
            "v3.5.0-rc.1",
            "v3.4.0-rc.1",
            "v3.3.0-rc.1",
            "v3.2.0-rc1",
            "v3.1.0",
            "v3.1.0-rc4",
            "v3.1.0-rc3",
            "v3.1.0-rc2",
            "v3.1.0-rc1",
            "v3.0.1",
            "v3.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-13845.json"
          }
        }
      ],
      "modified": "2026-10-24T10:49:56.923025855Z",
      "provider": "osv",
      "references": [
        "https://github.com/hpcng/singularity/security/advisories/GHSA-pmfr-63c2-jr5c",
        "https://medium.com/sylabs"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-13845",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 441891,
  "published_at": "2020-07-14T18:15:14.383+00:00"
}