mal-2025-191861
Vulnerability from ossf_malicious_packages
Published
2025-04-23 10:32
Modified
2025-12-31 02:45
Summary
Malicious code in s3transfer-sl (PyPI)
Details

-= Per source details. Do not edit below this line.=-

Source: kam193 (e1cc7c88223c47e4c3ceecc6fe73d05c1cbb505061a009f8ae5caf37086a2e09)

During installation, the package attempts to exfiltrate env variables and tokens from Azure metadata API. It's a malicious clon of s3transfer

Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.

Campaign: 2025-04-s3transfer-sl

Reasons (based on the campaign):

  • exfiltration-cloud-tokens

  • clones-real-package

  • typosquatting

Credits
Kamil Mańkowski (kam193) github.com/kam193 bad-packages.kam193.eu/
Kamil Mańkowski (kam193) github.com/kam193 bad-packages.kam193.eu/
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "s3transfer-sl"
      },
      "versions": [
        "0.12.4",
        "0.12.0",
        "0.12.1",
        "0.12.2",
        "0.12.3",
        "0.12.5"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "https://github.com/kam193",
        "https://bad-packages.kam193.eu/"
      ],
      "name": "Kamil Ma\u0144kowski (kam193)"
    },
    {
      "contact": [
        "https://github.com/kam193",
        "https://bad-packages.kam193.eu/"
      ],
      "name": "Kamil Ma\u0144kowski (kam193)",
      "type": "ANALYST"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "id": "pypi/2025-04-s3transfer-sl/s3transfer-sl",
        "import_time": "2025-12-02T22:30:55.560659468Z",
        "modified_time": "2025-04-23T10:32:24Z",
        "ranges": [
          {
            "events": [
              {
                "introduced": "0"
              }
            ],
            "type": "ECOSYSTEM"
          }
        ],
        "sha256": "5d10e122ebed25fab78cda8e7fd295eac6e3871a3017ccc1d8f0268c7d915569",
        "source": "kam193"
      },
      {
        "id": "pypi/2025-04-s3transfer-sl/s3transfer-sl",
        "import_time": "2025-12-02T23:07:18.603489461Z",
        "modified_time": "2025-04-23T10:32:24Z",
        "ranges": [
          {
            "events": [
              {
                "introduced": "0"
              }
            ],
            "type": "ECOSYSTEM"
          }
        ],
        "sha256": "e1cc7c88223c47e4c3ceecc6fe73d05c1cbb505061a009f8ae5caf37086a2e09",
        "source": "kam193"
      },
      {
        "id": "pypi/2025-04-s3transfer-sl/s3transfer-sl",
        "import_time": "2025-12-10T21:38:57.807060134Z",
        "modified_time": "2025-04-23T10:32:24Z",
        "sha256": "63ac1236be94096dd502d0448ce4360ead8b4d1d7bbe4091e71360b6b47d7f48",
        "source": "kam193",
        "versions": [
          "0.12.4",
          "0.12.0",
          "0.12.1",
          "0.12.2",
          "0.12.3",
          "0.12.5"
        ]
      },
      {
        "id": "pypi/2025-04-s3transfer-sl/s3transfer-sl",
        "import_time": "2025-12-30T22:39:04.17040703Z",
        "modified_time": "2025-04-23T10:32:24Z",
        "sha256": "33513a3f1624f77353ee7b07dbfabcd90173e70d9a81b05972adebaf0f18132c",
        "source": "kam193",
        "versions": [
          "0.12.0",
          "0.12.1",
          "0.12.2",
          "0.12.3",
          "0.12.4",
          "0.12.5"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (e1cc7c88223c47e4c3ceecc6fe73d05c1cbb505061a009f8ae5caf37086a2e09)\nDuring installation, the package attempts to exfiltrate env variables and tokens from Azure metadata API. It\u0027s a malicious clon of s3transfer\n\n\n---\n\nCategory: MALICIOUS - The campaign has clearly malicious intent, like infostealers.\n\n\nCampaign: 2025-04-s3transfer-sl\n\n\nReasons (based on the campaign):\n\n\n - exfiltration-cloud-tokens\n\n\n - clones-real-package\n\n\n - typosquatting\n",
  "id": "MAL-2025-191861",
  "modified": "2025-12-31T02:45:15Z",
  "published": "2025-04-23T10:32:24Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://bad-packages.kam193.eu/pypi/package/s3transfer-sl"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in s3transfer-sl (PyPI)"
}


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