GitHub Advisoryadvisory · PyPI

GHSA-fj7x-q9j7-g6q6 Black vulnerable to Regular Expression Denial of Service (ReDoS)

MEDIUM Published 2024-03-19 Modified 2024-03-20 Official page ↗
Aliases
CVE-2024-21503
Ecosystem
PyPI
Packages
black
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weaknesses
CWE-1333, CWE-75
Reviewed
2024-03-20

Affected packages

• PyPI black: < 24.3.0 → fixed in 24.3.0

Description

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.

Related

Alias · CVE (1)

  • CVE-2024-21503 Versions of the package black before 24.3.0 are vulnerable to Regular Expression Denial of Service (ReDoS) via the… vulnerability

Weakness · CWE (2)

  • CWE-1333 Inefficient Regular Expression Complexity weakness
  • CWE-75 Failure to Sanitize Special Elements into a Different Plane weakness

References