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Status published
High
CVE-2021-23437
Regular Expression Denial of Service (ReDoS)
Vulnerability Description
The package pillow 5.2.0 and before 8.3.2 are vulnerable to Regular Expression Denial of Service (ReDoS) via the getrgb function.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Liyuan Chen
References
- https://snyk.io/vuln/SNYK-PYTHON-PILLOW-1319443
- https://pillow.readthedocs.io/en/stable/releasenotes/8.3.2.html
- https://github.com/python-pillow/Pillow/commit/9e08eb8f78fdfd2f476e1b20b7cf38683754866b
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VKRCL7KKAKOXCVD7M6WC5OKFGL4L3SJT/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RNSG6VFXTAROGF7ACYLMAZNQV4EJ6I2C/
- https://security.gentoo.org/glsa/202211-10
- https://lists.debian.org/debian-lts-announce/2024/03/msg00021.html
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Affected Vendor
Affected Software
Pillow
Vulnerable Versions:
0, unspecified
Timeline
Official Publish:
September 3rd, 2021
Last Modified:
September 16th, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.