Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS1majd4LXE5ajctZzZxNs4AA6He

Black vulnerable to Regular Expression Denial of Service (ReDoS)

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.

Permalink: https://github.com/advisories/GHSA-fj7x-q9j7-g6q6
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1majd4LXE5ajctZzZxNs4AA6He
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: about 1 month ago
Updated: about 1 month ago

CVSS Score: 5.3
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Identifiers: GHSA-fj7x-q9j7-g6q6, CVE-2024-21503
References:

• https://nvd.nist.gov/vuln/detail/CVE-2024-21503
• https://github.com/psf/black/commit/f00093672628d212b8965a8993cee8bedf5fe9b8
• https://github.com/psf/black/releases/tag/24.3.0
• https://security.snyk.io/vuln/SNYK-PYTHON-BLACK-6256273
• https://github.com/pypa/advisory-database/tree/main/vulns/black/PYSEC-2024-48.yaml
• https://github.com/advisories/GHSA-fj7x-q9j7-g6q6

Repository: https://github.com/psf/black
Blast Radius: 26.6

Affected Packages