Security advisory

{
  "id": "2411c8c411e5c91378d7faf286451a3fc186a6bdddb1bc41db246e0de863478a",
  "url": "https://osv.dev/vulnerability/CVE-2021-3139",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-3139",
    "summary": "In Open-iSCSI tcmu-runner 1.3.x, 1.4.x, and 1.5.x through 1.5.2, xcopy_locate_udev in tcmur_cmd_handler.c lacks a check for transport-layer restrictions, allowing remote attackers to read or write files via directory traversal in an XCOPY request. For example, an attack can occur over a network if the attacker has access to one iSCSI LUN. NOTE: relative to CVE-2020-28374, this is a similar mistake in a different algorithm.",
    "evidence": "osv:CVE-2021-3139",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-3139",
      "aliases": [
        "CVE-2021-3139"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/open-iscsi/tcmu-runner",
              "type": "GIT",
              "events": [
                {
                  "introduced": "8c9c9db914c9af86a8b0e895f90968b51247f072"
                },
                {
                  "last_affected": "9c84f7a4348ac326ac269fbdda507953dba6ec2c"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:tcmu-runner_project:tcmu-runner:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.3.0"
                      },
                      {
                        "last_affected": "1.5.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.5.2",
            "v1.5.1",
            "v1.5.0",
            "v1.4.0",
            "v1.4.0-rc1",
            "v1.3.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3139.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:39.919397748Z",
      "provider": "osv",
      "references": [
        "https://www.openwall.com/lists/oss-security/2021/01/12/12",
        "https://bugzilla.suse.com/attachment.cgi?id=844938",
        "https://bugzilla.suse.com/show_bug.cgi?id=1178372",
        "https://github.com/open-iscsi/tcmu-runner/pull/644"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-3139",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385830,
  "published_at": "2021-01-13T16:15:14.617+00:00"
}