Vulnerability-Lookup

ubuntu-cve-2024-21503

Vulnerability from osv_ubuntu

Published

2024-03-19 05:15

Modified

2026-05-20 15:07

Summary

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.

Severity

5.3 (Medium)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2024-21503	REPORT
	https://security.snyk.io/vuln/SNYK-PYTHON-BLACK-6256273	REPORT
	https://github.com/psf/black/releases/tag/24.3.0	REPORT
	https://github.com/psf/black/commit/f00093672628d…	REPORT
	https://www.cve.org/CVERecord?id=CVE-2024-21503	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "black",
            "binary_version": "19.3b0-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "black",
        "purl": "pkg:deb/ubuntu/black@19.3b0-1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "19.3b0-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "black",
            "binary_version": "21.12b0-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "black",
        "purl": "pkg:deb/ubuntu/black@21.12b0-1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "20.8b1-4",
        "21.4b2-3",
        "21.10b0-1",
        "21.12b0-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "black",
            "binary_version": "24.2.0-1ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "black",
        "purl": "pkg:deb/ubuntu/black@24.2.0-1ubuntu1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "23.7.0-1",
        "23.10.1-1",
        "23.11.0-1",
        "24.2.0-1ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "black",
            "binary_version": "25.1.0-3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "black",
        "purl": "pkg:deb/ubuntu/black@25.1.0-3?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "25.1.0-2",
        "25.1.0-3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "black",
            "binary_version": "26.3.1-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "black",
        "purl": "pkg:deb/ubuntu/black@26.3.1-1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "25.1.0-3",
        "25.9.0-1",
        "25.11.0-1",
        "25.12.0-1",
        "26.1.0-1",
        "26.1.0-1build1",
        "26.3.1-1"
      ]
    }
  ],
  "aliases": [],
  "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.",
  "id": "UBUNTU-CVE-2024-21503",
  "modified": "2026-05-20T15:07:33Z",
  "published": "2024-03-19T05:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-21503"
    },
    {
      "type": "REPORT",
      "url": "https://security.snyk.io/vuln/SNYK-PYTHON-BLACK-6256273"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/psf/black/releases/tag/24.3.0"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/psf/black/commit/f00093672628d212b8965a8993cee8bedf5fe9b8"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-21503"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2024-21503"
  ]
}

CVE-2024-21503 (GCVE-0-2024-21503)

Vulnerability from cvelistv5 – Published: 2024-03-19 05:00 – Updated: 2024-08-01 22:20

Summary

Severity

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-1333 - Regular Expression Denial of Service (ReDoS)
CWE-75 - Failure to Sanitize Special Elements into a Different Plane (Special Element Injection)

Assigner

snyk

References

3 references

URL	Tags
https://security.snyk.io/vuln/SNYK-PYTHON-BLACK-6256273
https://github.com/psf/black/releases/tag/24.3.0
https://github.com/psf/black/commit/f00093672628d…

Impacted products

2 products

Vendor	Product	Version
n/a	black	Affected: 0 , < 24.3.0 (semver)
python_software_foundation	black	Affected: 0 , < 24.3.0 (custom) cpe:2.3:a:python_software_foundation:black::::::::

Credits

Sajeeb Lohani

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:python_software_foundation:black:*:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "black",
            "vendor": "python_software_foundation",
            "versions": [
              {
                "lessThan": "24.3.0",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-21503",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-03-19T13:35:33.402362Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-75",
                "description": "CWE-75 Failure to Sanitize Special Elements into a Different Plane (Special Element Injection)",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-20T21:14:49.619Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-01T22:20:40.916Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://security.snyk.io/vuln/SNYK-PYTHON-BLACK-6256273"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/psf/black/releases/tag/24.3.0"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/psf/black/commit/f00093672628d212b8965a8993cee8bedf5fe9b8"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "black",
          "vendor": "n/a",
          "versions": [
            {
              "lessThan": "24.3.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Sajeeb Lohani"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-1333",
              "description": "Regular Expression Denial of Service (ReDoS)",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-03-19T05:00:01.474Z",
        "orgId": "bae035ff-b466-4ff4-94d0-fc9efd9e1730",
        "shortName": "snyk"
      },
      "references": [
        {
          "url": "https://security.snyk.io/vuln/SNYK-PYTHON-BLACK-6256273"
        },
        {
          "url": "https://github.com/psf/black/releases/tag/24.3.0"
        },
        {
          "url": "https://github.com/psf/black/commit/f00093672628d212b8965a8993cee8bedf5fe9b8"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "bae035ff-b466-4ff4-94d0-fc9efd9e1730",
    "assignerShortName": "snyk",
    "cveId": "CVE-2024-21503",
    "datePublished": "2024-03-19T05:00:01.474Z",
    "dateReserved": "2023-12-22T12:33:20.119Z",
    "dateUpdated": "2024-08-01T22:20:40.916Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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.

Action not permitted

ubuntu-cve-2024-21503

Vulnerability from osv_ubuntu

CVE-2024-21503 (GCVE-0-2024-21503)

Tags

Sightings

Nomenclature