ghsa-fj7x-q9j7-g6q6
Vulnerability from github
Published
2024-03-19 06:30
Modified
2024-03-20 15:24
Severity ?
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Summary
Black vulnerable to Regular Expression Denial of Service (ReDoS)
Details

Versions of the package black before 24.3.0 are vulnerable to Regular Expression Denial of Service (ReDoS) via the lines_with_leading_tabs_expanded function in the strings.py file. An attacker could exploit this vulnerability by crafting a malicious input that causes a denial of service.

Exploiting this vulnerability is possible when running Black on untrusted input, or if you habitually put thousands of leading tab characters in your docstrings.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "black"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "24.3.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-21503"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333",
      "CWE-75"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-03-20T15:24:01Z",
    "nvd_published_at": "2024-03-19T05:15:09Z",
    "severity": "MODERATE"
  },
  "details": "Versions of the package black before 24.3.0 are vulnerable to Regular Expression Denial of Service (ReDoS) via the lines_with_leading_tabs_expanded function in the strings.py file. An attacker could exploit this vulnerability by crafting a malicious input that causes a denial of service.\n\nExploiting this vulnerability is possible when running Black on untrusted input, or if you habitually put thousands of leading tab characters in your docstrings.",
  "id": "GHSA-fj7x-q9j7-g6q6",
  "modified": "2024-03-20T15:24:01Z",
  "published": "2024-03-19T06:30:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-21503"
    },
    {
      "type": "WEB",
      "url": "https://github.com/psf/black/commit/f00093672628d212b8965a8993cee8bedf5fe9b8"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/psf/black"
    },
    {
      "type": "WEB",
      "url": "https://github.com/psf/black/releases/tag/24.3.0"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/black/PYSEC-2024-48.yaml"
    },
    {
      "type": "WEB",
      "url": "https://security.snyk.io/vuln/SNYK-PYTHON-BLACK-6256273"
    }
  ],
  "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:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Black vulnerable to Regular Expression Denial of Service (ReDoS)"
}


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