GHSA-F523-2F5J-GFCG

Vulnerability from github – Published: 2018-08-29 23:04 – Updated: 2023-09-13 19:38
VLAI?
Summary
Regular Expression Denial of Service in timespan
Details

Affected versions of timespan are vulnerable to a regular expression denial of service when parsing dates.

The amplification for this vulnerability is significant, with 50,000 characters resulting in the event loop being blocked for around 10 seconds.

Recommendation

No direct patch is available for this vulnerability.

Currently, the best available solution is to use a functionally equivalent alternative package.

It is also sufficient to ensure that user input is not being passed into timespan, or that the maximum length of such user input is drastically reduced. Limiting the input length to 150 characters should be sufficient in most cases.

Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "timespan"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "2.3.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2017-16115"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-06-16T21:33:38Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "Affected versions of `timespan` are vulnerable to a regular expression denial of service when parsing dates.\n\nThe amplification for this vulnerability is significant, with 50,000 characters resulting in the event loop being blocked for around 10 seconds.\n\n\n## Recommendation\n\nNo direct patch is available for this vulnerability.\n\nCurrently, the best available solution is to use a functionally equivalent alternative package.\n\nIt is also sufficient to ensure that user input is not being passed into `timespan`, or that the maximum length of such user input is drastically reduced. Limiting the input length to 150 characters should be sufficient in most cases.",
  "id": "GHSA-f523-2f5j-gfcg",
  "modified": "2023-09-13T19:38:19Z",
  "published": "2018-08-29T23:04:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-16115"
    },
    {
      "type": "WEB",
      "url": "https://github.com/indexzero/TimeSpan.js/issues/10"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-f523-2f5j-gfcg"
    },
    {
      "type": "WEB",
      "url": "https://www.npmjs.com/advisories/533"
    }
  ],
  "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"
    }
  ],
  "summary": "Regular Expression Denial of Service in timespan"
}


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  • 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 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.