pysec-2024-48
Vulnerability from pysec
Published
2024-03-19 05:15
Modified
2024-03-19 11:18
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.

Impacted products
Name purl
black pkg:pypi/black
Aliases


To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "black",
        "purl": "pkg:pypi/black"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "f00093672628d212b8965a8993cee8bedf5fe9b8"
            }
          ],
          "repo": "https://github.com/psf/black",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "24.3.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "18.3a0",
        "18.3a1",
        "18.3a2",
        "18.3a3",
        "18.3a4",
        "18.4a0",
        "18.4a1",
        "18.4a2",
        "18.4a3",
        "18.4a4",
        "18.5b0",
        "18.5b1",
        "18.6b0",
        "18.6b1",
        "18.6b2",
        "18.6b3",
        "18.6b4",
        "18.9b0",
        "19.10b0",
        "19.3b0",
        "20.8b0",
        "20.8b1",
        "21.10b0",
        "21.11b0",
        "21.11b1",
        "21.12b0",
        "21.4b0",
        "21.4b1",
        "21.4b2",
        "21.5b0",
        "21.5b1",
        "21.5b2",
        "21.6b0",
        "21.7b0",
        "21.8b0",
        "21.9b0",
        "22.1.0",
        "22.10.0",
        "22.12.0",
        "22.3.0",
        "22.6.0",
        "22.8.0",
        "23.1.0",
        "23.10.0",
        "23.10.1",
        "23.11.0",
        "23.12.0",
        "23.12.1",
        "23.1a1",
        "23.3.0",
        "23.7.0",
        "23.9.0",
        "23.9.1",
        "24.1.0",
        "24.1.1",
        "24.1a1",
        "24.2.0"
      ]
    }
  ],
  "aliases": [
    "CVE-2024-21503"
  ],
  "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.\r\rExploiting this vulnerability is possible when running Black on untrusted input, or if you habitually put thousands of leading tab characters in your docstrings.",
  "id": "PYSEC-2024-48",
  "modified": "2024-03-19T11:18:50.379002+00:00",
  "published": "2024-03-19T05:15:00+00:00",
  "references": [
    {
      "type": "WEB",
      "url": "https://security.snyk.io/vuln/SNYK-PYTHON-BLACK-6256273"
    },
    {
      "type": "WEB",
      "url": "https://github.com/psf/black/releases/tag/24.3.0"
    },
    {
      "type": "FIX",
      "url": "https://github.com/psf/black/commit/f00093672628d212b8965a8993cee8bedf5fe9b8"
    }
  ]
}


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