CVE-2021-41125: Scrapy Scrapy HTTP Authentication Credentials Potentially Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-jwqp-28gf-p498",
  "modified" : "2024-10-26T22:53:21Z",
  "published" : "2021-10-06T17:46:22Z",
  "aliases" : [ "CVE-2021-41125" ],
  "summary" : "Scrapy HTTP authentication credentials potentially leaked to target websites ",
  "details" : "### Impact\n\nIf you use [`HttpAuthMiddleware`](http://doc.scrapy.org/en/latest/topics/downloader-middleware.html#module-scrapy.downloadermiddlewares.httpauth) (i.e. the `http_user` and `http_pass` spider attributes) for HTTP authentication, all requests will expose your credentials to the request target.\n\nThis includes requests generated by Scrapy components, such as `robots.txt` requests sent by Scrapy when the `ROBOTSTXT_OBEY` setting is set to `True`, or as requests reached through redirects.\n\n### Patches\n\nUpgrade to Scrapy 2.5.1 and use the new `http_auth_domain` spider attribute to control which domains are allowed to receive the configured HTTP authentication credentials.\n\nIf you are using Scrapy 1.8 or a lower version, and upgrading to Scrapy 2.5.1 is not an option, you may upgrade to Scrapy 1.8.1 instead.\n\n### Workarounds\n\nIf you cannot upgrade, set your HTTP authentication credentials on a per-request basis, using for example the [`w3lib.http.basic_auth_header`](https://w3lib.readthedocs.io/en/latest/w3lib.html#w3lib.http.basic_auth_header) function to convert your credentials into a value that you can assign to the `Authorization` header of your request, instead of defining your credentials globally using [`HttpAuthMiddleware`](http://doc.scrapy.org/en/latest/topics/downloader-middleware.html#module-scrapy.downloadermiddlewares.httpauth).\n\n### For more information\nIf you have any questions or comments about this advisory:\n* [Open an issue](https://github.com/scrapy/scrapy/issues)\n* [Email us](mailto:opensource@zyte.com)\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "Scrapy"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.8.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "Scrapy"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.0.0"
      }, {
        "fixed" : "2.5.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/scrapy/scrapy/security/advisories/GHSA-jwqp-28gf-p498"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-41125"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/scrapy/scrapy/commit/b01d69a1bf48060daec8f751368622352d8b85a6"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/scrapy/PYSEC-2021-363.yaml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/scrapy/scrapy"
  }, {
    "type" : "WEB",
    "url" : "https://lists.debian.org/debian-lts-announce/2022/03/msg00021.html"
  }, {
    "type" : "WEB",
    "url" : "https://w3lib.readthedocs.io/en/latest/w3lib.html#w3lib.http.basic_auth_header"
  }, {
    "type" : "WEB",
    "url" : "http://doc.scrapy.org/en/latest/topics/downloader-middleware.html#module-scrapy.downloadermiddlewares.httpauth"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200", "CWE-522" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-10-06T17:32:00Z",
    "nvd_published_at" : "2021-10-06T18:15:00Z"
  }
}