CVE-2024-21503 Affecting black package, versions <24.3.0-r0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published23 May 2024
- disclosed19 Mar 2024
Introduced: 19 Mar 2024
CVE-2024-21503 (opens in a new tab)How to fix?
Upgrade Alpine:3.20 black to version 24.3.0-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream black package and not the black package as distributed by Alpine.
See How to fix? for Alpine:3.20 relevant fixed versions and status.
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.