github - ghsa-w3vf-7fpc-9fww

ghsa-w3vf-7fpc-9fww

Vulnerability from github

Published

2021-12-08 00:00

Modified

2025-07-03 21:31

Severity ?

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

ModSecurity 3.x through 3.0.5 mishandles excessively nested JSON objects. Crafted JSON objects with nesting tens-of-thousands deep could result in the web server being unable to service legitimate requests. Even a moderately large (e.g., 300KB) HTTP request can occupy one of the limited NGINX worker processes for minutes and consume almost all of the available CPU on the machine. Modsecurity 2 is similarly vulnerable: the affected versions include 2.8.0 through 2.9.4.

Show details on source website

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2021-42717"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-674"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-12-07T22:15:00Z",
    "severity": "HIGH"
  },
  "details": "ModSecurity 3.x through 3.0.5 mishandles excessively nested JSON objects. Crafted JSON objects with nesting tens-of-thousands deep could result in the web server being unable to service legitimate requests. Even a moderately large (e.g., 300KB) HTTP request can occupy one of the limited NGINX worker processes for minutes and consume almost all of the available CPU on the machine. Modsecurity 2 is similarly vulnerable: the affected versions include 2.8.0 through 2.9.4.",
  "id": "GHSA-w3vf-7fpc-9fww",
  "modified": "2025-07-03T21:31:20Z",
  "published": "2021-12-08T00:00:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-42717"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2022/05/msg00042.html"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2021/dsa-5023"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
    },
    {
      "type": "WEB",
      "url": "https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/modsecurity-dos-vulnerability-in-json-parsing-cve-2021-42717"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2021-42717 (GCVE-0-2021-42717)

Vulnerability from cvelistv5

Published

2021-12-07 21:08

Modified

2024-08-04 03:38

Severity ?

CWE

n/a

Summary

ModSecurity 3.x through 3.0.5 mishandles excessively nested JSON objects. Crafted JSON objects with nesting tens-of-thousands deep could result in the web server being unable to service legitimate requests. Even a moderately large (e.g., 300KB) HTTP request can occupy one of the limited NGINX worker processes for minutes and consume almost all of the available CPU on the machine. Modsecurity 2 is similarly vulnerable: the affected versions include 2.8.0 through 2.9.4.

References

URL

Tags

	https://www.debian.org/security/2021/dsa-5023	vendor-advisory, x_refsource_DEBIAN
	https://www.oracle.com/security-alerts/cpuapr2022.html	x_refsource_MISC
	https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/modsecurity-dos-vulnerability-in-json-parsing-cve-2021-42717/	x_refsource_MISC
	https://lists.debian.org/debian-lts-announce/2022/05/msg00042.html	mailing-list, x_refsource_MLIST

Impacted products

	Vendor	Product	Version
	n/a	n/a	Version: n/a

Show details on NVD website

To clipboard

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      "providerMetadata": {
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          ],
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    "datePublished": "2021-12-07T21:08:28",
    "dateReserved": "2021-10-19T00:00:00",
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  },
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}

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