GHSA-4QQQ-9VQF-3H3F

Vulnerability from github – Published: 2024-05-14 20:14 – Updated: 2024-05-20 20:22
VLAI
Summary
Scrapy leaks the authorization header on same-domain but cross-origin redirects
Details

Impact

Since version 2.11.1, Scrapy drops the Authorization header when a request is redirected to a different domain. However, it keeps the header if the domain remains the same but the scheme (http/https) or the port change, all scenarios where the header should also be dropped.

In the context of a man-in-the-middle attack, this could be used to get access to the value of that Authorization header

Patches

Upgrade to Scrapy 2.11.2.

Workarounds

There is no easy workaround for unpatched versions of Scrapy. You can replace the built-in redirect middlewares with custom ones patched for this issue, but you have to patch them yourself, manually.

References

This security issue was reported and fixed by @szarny at https://huntr.com/bounties/27f6a021-a891-446a-ada5-0226d619dd1a/.

Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "Scrapy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.11.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-1968"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-200"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-05-14T20:14:33Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Impact\n\nSince version 2.11.1, Scrapy drops the `Authorization` header when a request is redirected to a different domain. However, it keeps the header if the domain remains the same but the scheme (http/https) or the port change, all scenarios where the header should also be dropped.\n\nIn the context of a man-in-the-middle attack, this could be used to get access to the value of that `Authorization` header\n\n### Patches\n\nUpgrade to Scrapy 2.11.2.\n\n### Workarounds\n\nThere is no easy workaround for unpatched versions of Scrapy. You can replace the built-in redirect middlewares with custom ones patched for this issue, but you have to patch them yourself, manually.\n\n### References\n\nThis security issue was reported and fixed by @szarny at https://huntr.com/bounties/27f6a021-a891-446a-ada5-0226d619dd1a/.\n",
  "id": "GHSA-4qqq-9vqf-3h3f",
  "modified": "2024-05-20T20:22:55Z",
  "published": "2024-05-14T20:14:33Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/scrapy/scrapy/security/advisories/GHSA-4qqq-9vqf-3h3f"
    },
    {
      "type": "WEB",
      "url": "https://github.com/scrapy/scrapy/commit/1d0502f25bbe55a22899af915623fda1aaeb9dd8"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/scrapy/scrapy"
    },
    {
      "type": "WEB",
      "url": "https://huntr.com/bounties/27f6a021-a891-446a-ada5-0226d619dd1a"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Scrapy leaks the authorization header on same-domain but cross-origin redirects"
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.