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High

Security advisory

Type: advisorySources: OSVCVE: CVE-2018-12088

S3QL before 2.27 mishandles checksumming, and consequently allows replay attacks in which an attacker who controls the backend can present old versions of the filesystem metadata database as up-to-date, temporarily inject zero-valued bytes into files, or temporarily hide parts of files. This is related to the checksum_basic_mapping function.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2018-12088
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 04:34 UTC · Revision 1

Source evidence

CVE-2018-12088

core-osv · Original source

Published 10 Jun 2018, 23:29 UTC

S3QL before 2.27 mishandles checksumming, and consequently allows replay attacks in which an attacker who controls the backend can present old versions of the filesystem metadata database as up-to-date, temporarily inject zero-valued bytes into files, or temporarily hide parts of files. This is related to the checksum_basic_mapping function.

osv:CVE-2018-12088
Complete source record
{
  "id": "b3eea819ed2ee99a772961f29b8efd757706abcf240b5bcfc12e963e8aa05dc4",
  "url": "https://osv.dev/vulnerability/CVE-2018-12088",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-12088",
    "summary": "S3QL before 2.27 mishandles checksumming, and consequently allows replay attacks in which an attacker who controls the backend can present old versions of the filesystem metadata database as up-to-date, temporarily inject zero-valued bytes into files, or temporarily hide parts of files. This is related to the checksum_basic_mapping function.",
    "evidence": "osv:CVE-2018-12088",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2018-12088",
      "aliases": [
        "CVE-2018-12088"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/s3ql/s3ql",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "f118e7e871d0a86528c051d08a91dcc9c07ca187"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:s3ql_project:s3ql:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.27"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "release-2.26",
            "release-2.25",
            "release-2.24",
            "release-2.23",
            "release-2.22",
            "release-2.21",
            "release-2.20",
            "release-2.19",
            "release-2.18",
            "release-2.17.1",
            "release-2.17",
            "release-2.16",
            "release-0.43",
            "release-2.15",
            "release-2.14",
            "release-2.13",
            "release-2.12",
            "release-2.11.1",
            "release-2.11",
            "release-2.10.1",
            "release-2.10",
            "release-2.9",
            "release-2.8.1",
            "release-2.8",
            "release-2.7",
            "release-2.6",
            "release-2.5",
            "release-2.4",
            "release-2.3",
            "release-2.2",
            "release-2.1b",
            "release-2.0b",
            "release-1.14",
            "release-1.13.2",
            "release-1.13.1",
            "release-1.13",
            "release-1.12",
            "release-1.11.1",
            "release-1.11",
            "release-1.10",
            "release-1.9",
            "release-1.8.1",
            "release-1.8",
            "release-1.7",
            "release-1.4",
            "release-1.3",
            "release-1.2",
            "dev-release-1.1.4",
            "dev-release-1.1.3",
            "dev-release-1.1.2",
            "dev-release-1.1",
            "release-0.30",
            "release-0.29",
            "release-0.28",
            "release-0.27",
            "release-0.26",
            "release-0.25",
            "release-0.24",
            "release-0.21",
            "release-0.20.1",
            "release-0.20",
            "release-0.19",
            "release-0.18",
            "release-0.17",
            "release-0.16",
            "release-0.15",
            "release-0.14",
            "release-0.13",
            "release-0.11",
            "release-0.10",
            "release-0.9",
            "release-0.8",
            "release-0.7",
            "release-0.6",
            "release-0.5",
            "release-0.4",
            "release-0.3",
            "release-0.2",
            "release-0.1",
            "alpha4",
            "alpha3"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-12088.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:20.113315579Z",
      "provider": "osv",
      "references": [
        "https://groups.google.com/forum/#%21topic/s3ql/4TzCVIMkA4o",
        "https://bitbucket.org/nikratio/s3ql/commits/85aba5c2d5c81453a73a50ed638adaeef0521020",
        "https://bitbucket.org/nikratio/s3ql/issues/272/t3_verifypy-test_retrieve-sometimes-fails"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2018-12088",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 430184,
  "published_at": "2018-06-10T23:29:00.22+00:00"
}