PYSEC-2024-162

Vulnerability from pysec - Published: 2024-02-28 00:15 - Updated: 2025-01-14 05:22
VLAI?
Details

A Regular Expression Denial of Service (ReDoS) vulnerability exists in the XMLFeedSpider class of the scrapy/scrapy project, specifically in the parsing of XML content. By crafting malicious XML content that exploits inefficient regular expression complexity used in the parsing process, an attacker can cause a denial-of-service (DoS) condition. This vulnerability allows for the system to hang and consume significant resources, potentially rendering services that utilize Scrapy for XML processing unresponsive.

Severity ?
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Impacted products
Name purl
scrapy pkg:pypi/scrapy
Aliases
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "scrapy",
        "purl": "pkg:pypi/scrapy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "479619b340f197a8f24c5db45bc068fb8755f2c5"
            },
            {
              "fixed": "479619b340f197a8f24c5db45bc068fb8755f2c5"
            }
          ],
          "repo": "https://github.com/scrapy/scrapy",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.11.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.10.4.2364",
        "0.12.0.2550",
        "0.14.1",
        "0.14.2",
        "0.14.3",
        "0.14.4",
        "0.16.0",
        "0.16.1",
        "0.16.2",
        "0.16.3",
        "0.16.4",
        "0.16.5",
        "0.18.0",
        "0.18.1",
        "0.18.2",
        "0.18.3",
        "0.18.4",
        "0.20.0",
        "0.20.1",
        "0.20.2",
        "0.22.0",
        "0.22.1",
        "0.22.2",
        "0.24.0",
        "0.24.1",
        "0.24.2",
        "0.24.3",
        "0.24.4",
        "0.24.5",
        "0.24.6",
        "0.7",
        "0.8",
        "0.9",
        "1.0.0",
        "1.0.0rc1",
        "1.0.0rc2",
        "1.0.0rc3",
        "1.0.1",
        "1.0.2",
        "1.0.3",
        "1.0.4",
        "1.0.5",
        "1.0.6",
        "1.0.7",
        "1.1.0",
        "1.1.0rc1",
        "1.1.0rc2",
        "1.1.0rc3",
        "1.1.0rc4",
        "1.1.1",
        "1.1.2",
        "1.1.3",
        "1.1.4",
        "1.2.0",
        "1.2.1",
        "1.2.2",
        "1.2.3",
        "1.3.0",
        "1.3.1",
        "1.3.2",
        "1.3.3",
        "1.4.0",
        "1.5.0",
        "1.5.1",
        "1.5.2",
        "1.6.0",
        "1.7.0",
        "1.7.1",
        "1.7.2",
        "1.7.3",
        "1.7.4",
        "1.8.0",
        "1.8.1",
        "1.8.2",
        "1.8.3",
        "1.8.4",
        "2.0.0",
        "2.0.1",
        "2.1.0",
        "2.10.0",
        "2.10.1",
        "2.11.0",
        "2.2.0",
        "2.2.1",
        "2.3.0",
        "2.4.0",
        "2.4.1",
        "2.5.0",
        "2.5.1",
        "2.6.0",
        "2.6.1",
        "2.6.2",
        "2.6.3",
        "2.7.0",
        "2.7.1",
        "2.8.0",
        "2.9.0"
      ]
    }
  ],
  "aliases": [
    "CVE-2024-1892"
  ],
  "details": "A Regular Expression Denial of Service (ReDoS) vulnerability exists in the XMLFeedSpider class of the scrapy/scrapy project, specifically in the parsing of XML content. By crafting malicious XML content that exploits inefficient regular expression complexity used in the parsing process, an attacker can cause a denial-of-service (DoS) condition. This vulnerability allows for the system to hang and consume significant resources, potentially rendering services that utilize Scrapy for XML processing unresponsive.",
  "id": "PYSEC-2024-162",
  "modified": "2025-01-14T05:22:21.870348+00:00",
  "published": "2024-02-28T00:15:53+00:00",
  "references": [
    {
      "type": "EVIDENCE",
      "url": "https://huntr.com/bounties/271f94f2-1e05-4616-ac43-41752389e26b"
    },
    {
      "type": "FIX",
      "url": "https://github.com/scrapy/scrapy/commit/479619b340f197a8f24c5db45bc068fb8755f2c5"
    },
    {
      "type": "FIX",
      "url": "https://huntr.com/bounties/271f94f2-1e05-4616-ac43-41752389e26b"
    },
    {
      "type": "REPORT",
      "url": "https://huntr.com/bounties/271f94f2-1e05-4616-ac43-41752389e26b"
    },
    {
      "type": "WEB",
      "url": "https://huntr.com/bounties/271f94f2-1e05-4616-ac43-41752389e26b"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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  • 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.