PT-2024-2442 · Black+1 · Black+1

Sajeeb Lohani · Published 2024-03-18 · Updated 2025-01-24 · CVE-2024-21503

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions black versions prior to 24.3.0

Description The issue is related to a Regular Expression Denial of Service (ReDoS) vulnerability via the lines with leading tabs expanded function in the strings.py file. An attacker could exploit this by crafting a malicious input that causes a denial of service. This is possible when running Black on untrusted input or if thousands of leading tab characters are habitually put in docstrings.

Recommendations For versions prior to 24.3.0, update to version 24.3.0 or later to resolve the issue. As a temporary workaround, consider avoiding the use of the lines with leading tabs expanded function or restricting input to trusted sources until a patch is applied.

Fix

DoS

Weakness Enumeration

CWE-1333

CWE-75

Related Identifiers

BDU:2024-02397

CVE-2024-21503

GHSA-FJ7X-Q9J7-G6Q6

OPENSUSE-SU-2024:13783-1

PYSEC-2024-48

RHSA-2024:3781

SUSE-SU-2024:2481-1

Affected Products

Debian

Black

References · 26

• https://bdu.fstec.ru/vul/2024-02397 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2024-21503 · Security Note
• https://ubuntu.com/security/CVE-2024-21503 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:2481-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2024-21503 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-fj7x-q9j7-g6q6 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2024-21503 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2024-21503 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2024-21503 · Security Note
• https://osv.dev/vulnerability/PYSEC-2024-48 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2024-21503 · Vendor Advisory
• https://github.com/psf/black · Note
• https://github.com/psf/black/releases/tag/24.3.0 · Note
• https://github.com/psf/black/commit/f00093672628d212b8965a8993cee8bedf5fe9b8 · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/black/PYSEC-2024-48.yaml · Note