Overview
NLTK Vulnerable to REDoS
Advisory
Nltk before 3.6.6 is vulnerable to Inefficient Regular Expression Complexity.
How to Fix
Upgrade
nltk
to3.6.6
or higher.Mitigation and Workarounds
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Vulnerable Functions
Functions linked to known vulnerabilities.
References
- https://getsafety.com/vulnerabilities/SFTY-20220104-12451/CVE-2021-3842
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3842
- https://github.com/advisories/GHSA-rqjh-jp2r-59cj
- https://github.com/nltk/nltk
- https://github.com/nltk/nltk/commit/2a50a3edc9d35f57ae42a921c621edc160877f4d
- https://huntr.dev/bounties/761a761e-2be2-430a-8d92-6f74ffe9866a
- https://nvd.nist.gov/vuln/detail/CVE-2021-3842
- https://nvd.nist.gov/vuln/detail/CVE-2021-3842
- https://github.com/nltk/nltk/commit/2a50a3edc9d35f57ae42a921c621edc160877f4d
- https://huntr.dev/bounties/761a761e-2be2-430a-8d92-6f74ffe9866a
- https://github.com/nltk/nltk/pull/2906
- https://github.com/pypa/advisory-database/tree/main/vulns/nltk/PYSEC-2022-5.yaml
- https://github.com/advisories/GHSA-rqjh-jp2r-59cj
Verified by Safety
Our Cybersecurity Intelligence Team reviewed this vulnerability. We combine public data with our own research to find issues not yet reported to public sources.
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