{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/hpcng/singularity"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.7.2"
            },
            {
              "fixed": "3.7.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-20"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-05-28T20:04:38Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "# Impact\nDue to incorrect use of a default URL, `singularity` action commands (`run`/`shell`/`exec`) specifying a container using a `library://` URI will always attempt to retrieve the container from the default remote endpoint (`cloud.sylabs.io`) rather than the configured remote endpoint.\n\nAn attacker may be able to push a malicious container to the default remote endpoint with a URI that is identical to the URI used by a victim with a non-default remote endpoint, thus executing the malicious container.\n\nOnly action commands (`run`/`shell`/`exec`) against `library://` URIs are affected. Other commands such as `pull` / `push` respect the configured remote endpoint.\n\n# Patches\nAll users should upgrade to Singularity 3.7.4 or later.\n\n# Workarounds\nUsers who only interact with the default remote endpoint or do not use the library:// url are not affected.\n\nInstallations with an execution control list configured to restrict execution to containers signed with specific secure keys are not affected.\n\n# Acknowledgements\nThis issue was found by Mike Frisch and brought to our attention by Sylabs.  Sylabs is making a [coordinated disclosure](https://github.com/sylabs/singularity/security/advisories/GHSA-5mv9-q7fq-9394).\n\n# For more information\nGeneral questions about the impact of the advisory can be asked in the:\n\n[Singularity Slack Channel](https://join.slack.com/t/hpcng/shared_invite/zt-qda4h1ls-OP0Uouq6sSmVE6i_0NrWdw)\n[Singularity Mailing List](https://groups.google.com/a/lbl.gov/g/singularity)\nAny sensitive security concerns should be directed to: [singularity-security@hpcng.org](mailto:singularity-security@hpcng.org)\n",
  "id": "GHSA-jq42-hfch-42f3",
  "modified": "2021-10-05T17:22:08Z",
  "published": "2021-06-01T21:20:53Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/hpcng/singularity/security/advisories/GHSA-jq42-hfch-42f3"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sylabs/singularity/security/advisories/GHSA-5mv9-q7fq-9394"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/hpcng/singularity"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Action Commands (run/shell/exec) Against Library URIs Ignore Configured Remote Endpoint"
}